Malicious PDF — malware analysis report

Static analysis result for SHA-256 afbc743e001374ff…

MALICIOUS

PDF

79.0 KB Created: 2021-06-13 02:44:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 228728547af7a9bb61a94df855cd5b4a SHA-1: 1dfd3bd72fd4eaca2769ea4a3103137978866f20 SHA-256: afbc743e001374ff6d13cbcdd493f7e1937878b7af898d859e136f398c244689
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting a phishing or malware distribution campaign. The presence of 'utm_term' parameters in some URLs indicates an attempt to track user engagement with lures like 'adobe photoshop cs2 keygen generator free download'. ClamAV and ML classifiers strongly indicate malicious content, likely a phishing lure or a downloader for further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://catamma.ru/uplcv?utm_term=adobe+photoshop+cs2+keygen+generator+free+download PDF link annotation
    • https://srp-galabau-rostock.de/wp-content/plugins/super-forms/uploads/php/files/an0p2ivddpq5lhn1mt2e5odnl0/37734078377.pdfIn PDF document text
    • http://vladjurnalist.ru/archive/file/vorovepegixabisitubutoxus.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/160985a810d13b---55233090677.pdfIn PDF document text
    • https://alshamiltrading.com/alshamilfiles/file/72741824678.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082ab8b550f7---83369294960.pdfIn PDF document text
    • https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/fe340b543bc1d7933be314ed85887692/29897473988.pdfIn PDF document text
    • https://medicinasolidale.org/wp-content/plugins/super-forms/uploads/php/files/0e0382c81154cd2f23ecf5419dba39a6/48132256513.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/enfvke52o980kashajdnoa4j92/33017064458.pdfIn PDF document text
    • http://modellszerviz.hu/userfiles/file/25970470794.pdfIn PDF document text
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16074d27e96739---vovifasazodotomaxigug.pdfIn PDF document text
    • https://binarbaidfabrication.com/public_html/userfiles/file/57043196368.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/924554c51472daaf3e7c6154b9628ca4/60129193288.pdfIn PDF document text
    • http://fresh-j.info/images/uploadedimages/file/sumafogakilomilujilak.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b43d2ef1841---72501984569.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608be265ae900---64278627310.pdfIn PDF document text
    • https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/1afeaa153b247433b8a1f566ebe28159/meruxijusomekul.pdfIn PDF document text
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/jm36cue48de68otu4d8rv3fi7k/motomuzovinawumu.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/16098b1e78303b---fopigutaponab.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_off0000f665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF665 5936 bytes
SHA-256: 429387099e3a20d11f4832b2c834f6c6e57869a03b9a6539094f32f056c72997
font_01_sfnt_off00010ab2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB2 10600 bytes
SHA-256: 629d338fdcf8b621f63075fd843e6ae42e5ddb2c9f8cddbc36b5b187e004aeef

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