Malicious PDF — malware analysis report

Static analysis result for SHA-256 404208ada33ddcc6…

MALICIOUS

PDF

50.3 KB Created: 2021-03-12 09:25:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9aa84e42418758de14c76e46ff9f55e1 SHA-1: 39823b72d8f8b72743dce800652f03091f3415c9 SHA-256: 404208ada33ddcc65ac95eb3a2189e474ad7938056fa463656819c8ac4372b97
64 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7510

Heuristics 3

  • 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://xajibur.ru/award?keyword=tinkle+digest+online+free+download+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410186/normal_601814a9b6420.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454678/normal_600d14d6d7129.pdfIn PDF document text
    • http://mekujoviwe.mypressonline.com/90468197158.pdfIn PDF document text
    • http://mitutepoka.medianewsonline.com/which_is_more_important_sun_moon_or_rising_sign.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378606/normal_603ce70d3c447.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421199/normal_5fee7236567ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379722/normal_602ae92861f00.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369932/normal_5ff719d5a8e86.pdfIn PDF document text
    • http://rezisekuvaz.mypressonline.com/lefamatetemu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379605/normal_602a15ed7cc97.pdfIn PDF document text
    • http://lololoj.sportsontheweb.net/sanutijugukuradefa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bee2a5c9-564a-4321-a248-15685a5f9de5/18124981802.pdfIn PDF document text
    • http://sukokovevaz.atwebpages.com/iowa_boee_folder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d23a5756-f52b-4209-8ce9-9e65a69694ba/mevezo.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/61330046481.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32919902-812e-4ff1-9b9b-4778e953f5f2/best_japanese_wii_u_games.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f460f4aa-92b9-4cfc-9908-eb303d34116a/buserogitobimag.pdfIn PDF document text
    • http://tofujuwo.onlinewebshop.net/vamejemivaze.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/download_alquran_30_juz_audio.pdfIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

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