Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe3ed6c1be5df3eb…

MALICIOUS

PDF

69.2 KB Created: 2021-05-07 03:46:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e2d5bc642b5049c6450c8b2c63c4dfa2 SHA-1: ce6929a07ee7d81bc0a2fcb032fdaa02474fd704 SHA-256: fe3ed6c1be5df3eb57c979a9876fbe2abcf9cdec1c14d88c3d157bb2639bfaa8
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. It contains numerous links pointing to compromised websites, suggesting a phishing or malware distribution campaign. The presence of external URIs and link farms on disposable hosting indicates an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://huntic.ru/uplcv?utm_term=babbu+maan+new+song+mehndi PDF link annotation
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/832036168dc58b6f6269d20c0c9ce998/jikag.pdfIn PDF document text
    • http://amexeuro.com/an3_Uploads/file/fubevegabifimajiden.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607570d49e488---86643683115.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/bcf2a38bc10425e1c954f6e0a29816cc/zogujinimovoxuwuzad.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080107e85e26---zanovaf.pdfIn PDF document text
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/e4b583679123c11eed0fad6d99afb98c/rilux.pdfIn PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/1607996c2b3b87---latowemor.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/16084bb9394e7d---gewewivuv.pdfIn PDF document text
    • https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/btbvd622fvq3s1nb00i1u6bnhe/4326607485.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/fdv1ua3vfhnhbk0eos8389j68e/28503472399.pdfIn PDF document text
    • https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/2ddb5461e48d58a3b5e058331990d96e/47848990715.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16086c19f33e1d---ferat.pdfIn PDF document text
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607154732b251---liwepuvurevoki.pdfIn PDF document text
    • http://anandamsanyal.com/userfiles/file/53364806094.pdfIn PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/16074081945a02---30369916655.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/6edcae39234571635fe10a0b666f4d66/56249647564.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1DF 5392 bytes
SHA-256: bcac2e296b83510df499176ce652bc5f2eaea1b8e3f8009420f82f2933db256a
font_01_sfnt_off0000e421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE421 10616 bytes
SHA-256: 22ced822196e9cb3458b2195bed39a4692353d3a6e9d0a8d89b9730fffecbb7e