Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b6b07957a012e4b…

MALICIOUS

PDF

71.6 KB Created: 2021-06-13 11:02:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: e0f9eae9ce614b63c5b3428d16c53f53 SHA-1: 1909a399874b6663cae738d9a973ace32d8068f7 SHA-256: 9b6b07957a012e4b22f287eeb87c2b9b93d12bb1545b489eef6d08ad8711473e
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or malware distribution intent. It contains a link farm pointing to multiple compromised WordPress sites and other disposable hosting, likely to serve malicious content or phish users. The document body is heavily obfuscated and contains what appears to be metadata rather than user-readable content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7986

Heuristics 5

  • 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
  • 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://ketchas.ru/uplcv?utm_term=stardew+switch+cheats PDF link annotation
    • https://aurorabersinar2.com/contents//files/mufebipurosa.pdfIn PDF document text
    • https://markeishahall.com/wp-content/plugins/super-forms/uploads/php/files/d961b1055490eaadfa57c8225523bdb6/86848278240.pdfIn PDF document text
    • https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/cd5e3fd8a90e4e6070cf72d8b9a61f7f/19328321287.pdfIn PDF document text
    • https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/v1gqgmmn8jq27vg4ugpelahda0/ligiwifuki.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a97e4cea9b0---tinuk.pdfIn PDF document text
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/f2a5b0dd3890fd6f1e00fc105efe7f39/samavaga.pdfIn PDF document text
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/trg1tbtcrd4jmo9pd7kvt37rus/xusezutusozemedamupikaw.pdfIn PDF document text
    • http://superfishinglewood.com/uploads/files/gobudomobolefilegodito.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/121ba45402dc4fdf9736ba3edc5a0112/debutudojetesupudokuvinu.pdfIn PDF document text
    • https://leesman.com/wp-content/plugins/super-forms/uploads/php/files/50f900d0906afb6866de7c29a51e3867/67094212761.pdfIn PDF document text
    • http://xn--k1akb4c.xn--p1ai/userfiles/file/vamurolax.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a1c5bb4605---43443532212.pdfIn PDF document text
    • http://rollfactorytogo.com/uploads/files/zuwofovuxexotomuwaj.pdfIn PDF document text
    • https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/2a38962f43006c1061b5c9916d008092/39659716332.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D8 5188 bytes
SHA-256: 24c49bbcb668a210488e53a0106e78d854f5854314d2386c29ed013fb0546e5b

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