Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ecbc611858d8ac1…

MALICIOUS

PDF

82.1 KB Created: 2021-09-23 17:32:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 8d69def028f1921b887e9babbc2a5fff SHA-1: 675da67f483223942ce9637bfdc38b609966d0a6 SHA-256: 7ecbc611858d8ac1573272f1972b4e3afa9e3c44f905fa55f36466d4b795c8de
156 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 or disposable domains, indicating a link farm designed to redirect users. The presence of a 'utm_term' parameter suggests a phishing or SEO manipulation attempt. ClamAV detection and ML classification further support its malicious nature, likely as a phishing lure or a distribution point for further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 6

  • 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.
  • 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://drafthe.ru/uplcv?utm_term=hack+amazon+prime+video+apk PDF link annotation
    • http://paletydozahrady.cz/ckfinder/userfiles/files/96076391609.pdfIn PDF document text
    • https://bahceneryaman.net/public/content-images/files/11762550595.pdfIn PDF document text
    • http://klemanpince.hu/files/file/67786817228.pdfIn PDF document text
    • http://global-leasing-management.com/uf/file/sekomulezaguwafipevovo.pdfIn PDF document text
    • https://kompaspt2.com/contents/files/majozubujos.pdfIn PDF document text
    • http://energy-labels.com/userfiles/file/suwuxizu.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1614177f6a4c65---42137531402.pdfIn PDF document text
    • https://cpsguffanti.com/uploads/file/tipuruborirabixuninuk.pdfIn PDF document text
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/161460bbfdcf52---fukatepuwazizonodezofiriv.pdfIn PDF document text
    • https://needletherapy.eu/upload/file/negexudep.pdfIn PDF document text
    • http://cristal-in.fr/userfiles/file/laviximaxijorivebirikep.pdfIn PDF document text
    • https://motoralbini.it/files/file/49959323171.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/geeh1lebuou6006j229oi1vo96/74027882332.pdfIn PDF document text
    • https://universal4shipping.net/userfiles/file/96434247150.pdfIn PDF document text
    • http://dmychadla.eu/UserFiles/File/migawodefoloxizenori.pdfIn PDF document text
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/1966f4aa3ff8cea77a95392917d3f300/32305987981.pdfIn PDF document text
    • https://krusomying.com/data/file/xupojupizukego.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139a2fa63bbf---rigepedatosa.pdfIn PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613edceb73862---33334308319.pdfIn PDF document text
    • http://colokit.thienlonggroup.com/Images_upload/files/luzorenufosovi.pdfIn PDF document text
    • https://posetili.ru/userfiles/file/tubegifovoniju.pdfIn PDF document text
    • http://tochuchoinghi.org/files/89023849345.pdfIn PDF document text
    • http://qdsenfeng.com/data/files/17240383527.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_off0000d9a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f1b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B4 18720 bytes
SHA-256: 3fc8ba88a41c52db42f47517124882542cd90502ab3a8db413d388d33bc7ddf5
font_02_sfnt_off000122c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122C3 10572 bytes
SHA-256: 09ebc0102286df825a1fb4bf1e5ae7a0a304f583a286e5da1d31e08256b53a2a

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