Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fcceb7fe7cd8879…

MALICIOUS

PDF

85.5 KB Created: 2021-09-16 16:28:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 021eed6b130aaa9af099dcc8675e56df SHA-1: 7a762d4e0507d17d2af262c676c6e5f7a9576df3 SHA-256: 9fcceb7fe7cd8879641e284d592e8610a7d9ff95c23033d796d714a28debb87f
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The ML classifier and ClamAV detection strongly indicate this PDF is malicious. It contains numerous external links, some hosted on compromised CMS platforms and disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of a visual download button further supports a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://cructi.ru/uplcv?utm_term=download+xposed+imei+changer PDF link annotation
    • http://airholic.com/UpFiles/WebEditorFiles/file/88659787144.pdfIn PDF document text
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/161403f8e7aff2---zigok.pdfIn PDF document text
    • http://naim.naparts.com/images/fck/file/vibuwituwugifiguj.pdfIn PDF document text
    • http://robertwestlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/fusuzikujakuserori.pdfIn PDF document text
    • http://ffarchitettura.it/userfiles/files/feraxabuxigin.pdfIn PDF document text
    • http://everest-c.ru/ckfinder/userfiles/files/fupapuw.pdfIn PDF document text
    • https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/010c660788d4b9a71201a762c6dba41c/9029168452.pdfIn PDF document text
    • http://heatexchangersolution.com/upload_fck/file/2021-9-6/20210906034758181307.pdfIn PDF document text
    • http://keacg.com/upload/files/26737416858.pdfIn PDF document text
    • http://reguitti-engineering.it/userfiles/files/kijenojeki.pdfIn PDF document text
    • http://alacarte-design.de/userfiles/file/82267539369.pdfIn PDF document text
    • https://fleseriuassociates.ro/files/file/nepexel.pdfIn PDF document text
    • http://asr-net.ru/uploads/files/zagidolumovadefenuwuw.pdfIn PDF document text
    • http://slmj8.com/data/userfiles/files/72254536497.pdfIn PDF document text
    • http://recrute.fr/files/files/bemeniguruzuvadipaveso.pdfIn PDF document text
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/t25abcric9j017o5628h7irpg0/japinexezosijezekubodetop.pdfIn PDF document text
    • http://gpsputhuppally.com/userfiles/file/46787732888.pdfIn PDF document text
    • https://lexcyberia.com/userfiles/files/33102277061.pdfIn PDF document text
    • http://dragonera.cn/admin/userfiles/file/gimoxonudoxumemoxerifuzu.pdfIn PDF document text
    • http://studionegro.net/userfiles/files/revomogojuno.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/jt2isd3dp1v79loumec4o17nlm/4908038058.pdfIn PDF document text
    • https://rlmahtani.com/userfiles/files/lebibijuwarulupik.pdfIn PDF document text
    • http://tomdythai.com/userfiles/files/67948424065.pdfIn PDF document text
    • http://studiopol.com/userfiles/files/bovezosamidilamitafezupa.pdfIn PDF document text
    • https://dpengineers.info/admin/userfiles/file/gatozovo.pdfIn PDF document text
    • http://lacasedescaraibes.fr/file/rupagejuxebokuvanupogoz.pdfIn PDF document text
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ffec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFEC 11052 bytes
SHA-256: 962e5b0e0b7c3e613523546e9b8270c3412eeec685f0204228cc421d27eae141
font_02_sfnt_off00011948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11948 18332 bytes
SHA-256: d02a0f26e34173b431f07998b5d84ff37d51ae776dce27d62886632f74246705

Open this report in the interactive analyzer, or submit your own file for analysis.