Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbeed54935401b8a…

MALICIOUS

PDF

96.7 KB Created: 2021-07-13 16:43:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: f318a1a28e5bb85741b30cfc6c914595 SHA-1: eab9b8008c0e1e330815c6190fcfc9b8513753bf SHA-256: bbeed54935401b8a4b1b25fdd34ccf418a66203bae4f28b85dde45f7b997535a
256 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress installations, suggesting a phishing or credential harvesting attempt. The critical heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document's content directly solicits sensitive recovery information, such as private keys or backup codes, from the user. While no scripts were explicitly extracted, the presence of external links and the nature of the lure strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9910

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/5gar8ibuqpnpp5tl6bpgcgu98r/sobofaretirelesorazol.pdf In PDF document text
    • http://dinskayarealty.ru/media/file/54647531808.pdfIn PDF document text
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/02dc4d7e502ff5158025cebfca6bcd99/33487717068.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607acd7a33237---71170726799.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dedc15a5dee---tedemosejegobitesi.pdfIn PDF document text
    • http://innovad-ltd.com/userfiles/file/86597627464.pdfIn PDF document text
    • https://workinhotel.com/upload/fckfile/zopodod.pdfIn PDF document text
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/0ea0f7cb19c06955ee7cf26e26e9c282/72225814114.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/f475a6fb42639022e0d50204632381d6/zumakes.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/160797102e20d9---31525933791.pdfIn PDF document text
    • https://sahyadrisevasanstha.in/userfiles/file/wexijedawelorupiw.pdfIn PDF document text
    • http://banglatalkies.com/dynamic-images/cms/file/pewefafazusalaso.pdfIn PDF document text
    • http://kolkandkolkdesign.com/site/data/ws/files/27496648751.pdfIn PDF document text
    • http://www.haztartasigepszakuzlet.hu/pics/file/zuvibifunilulezekat.pdfIn PDF document text
    • https://burkina-businessschool.com/business_school/uploads/file/zibiwi.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/egdjljiqqkrm1iquig4vf92lm3/22101178628.pdfIn PDF document text
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/45174c119452f77fc799ef4e58e87183/wefipuvumapusubit.pdfIn PDF document text
    • http://haustechnik-hagenauer.at/64955710196.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/jg6u13hetqcdl64nc8qsrrkdb5/41033571810.pdfIn PDF document text
    • https://www.ideaklinik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cba24740e2---duvuxaminosorew.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/213fe0a33b51f2c01d169e92f83c3908/korijusawazejaga.pdfIn PDF document text
    • http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1ba61167cc---bimumufiduwivus.pdfIn PDF document text
    • http://gurukripapublicschool.com/userfiles/file/waxipefapel.pdfIn PDF document text
    • http://jinanxintiandi.com/userfiles/files/25381867628.pdfIn PDF document text
    • http://travelport.pl/userfiles//file/96524974592.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=run+multiple+commands+in+one+line+linuxPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000107cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107CC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011fde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FDE 18744 bytes
SHA-256: 50727fe235dfa2fab1b9097c93aa882141a82cd530d1091613c56e885ce54083
font_02_sfnt_off0001520b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1520B 1696 bytes
SHA-256: 28c5bcedffb0f63c0f18ed07264126f7c833899b916de9a351f9850be7cb6bae
font_03_sfnt_off00015a1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A1C 10820 bytes
SHA-256: d3b25a2aad9ddaa1f77b0c2ee620890c3e1423c805e748f6af58309ad48ac113

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