Malicious PDF — malware analysis report

Static analysis result for SHA-256 38f7881647d08d53…

MALICIOUS

PDF

83.2 KB Created: 2021-03-04 21:35:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5e3b78c974f3b70f74cabf41f0dbc744 SHA-1: 45c6edf3e14daf3a876145da33d68ca7dcafa944 SHA-256: 38f7881647d08d534950c169a78e2b8d7803603dc2fe34410f87f3c1471f2f1d
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, many of which point to SEO redirectors and link farms, indicating a phishing or malicious content distribution scheme. The heuristic 'PDF_SEO_LINK_FARM' and 'PDF_SEO_UTM_REDIRECTOR_LINK' strongly suggest this intent. The embedded URL 'https://botokaw.ru/award?keyword=how+do+i+start+a+bread+bakery+business' is presented as a lure related to starting a business, which is a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6590

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://botokaw.ru/award?keyword=how+do+i+start+a+bread+bakery+business PDF link annotation
    • https://zitasiga.weebly.com/uploads/1/3/6/0/136088478/014ef60f.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/uncle_johns_bathroom_reader_extraordinary_book_of_facts.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/7578146503.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448116/normal_601e5fc0de54f.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/81333822936.pdfIn PDF document text
    • https://rupevegix.weebly.com/uploads/1/3/4/8/134887155/zoxeb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392207/normal_6008dab01f85d.pdfIn PDF document text
    • http://trelon.fun/xewavodoputexawosalagiposz2i0.pdfIn PDF document text
    • https://s3.amazonaws.com/nodetuxapabara/direct_and_indirect_speech_examples_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/berserk_wallpaper_android.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388169/normal_5ff50787669ba.pdfIn PDF document text
    • http://reduslimitaly.website/the_fifth_wave_cast_and_crews5uni.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/bms_performance_ireland.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417535/normal_5fd64bcb5d34f.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/tiwanowajuwozavipapo.pdfIn PDF document text
    • https://suwudaxodorepe.weebly.com/uploads/1/3/4/8/134885248/kolorolimibu.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/fufinivarujefoz.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/hamilton_beach_flexbrew_carafe_instructions.pdfIn PDF document text
    • http://astropsychology.site/36512261201zj916.pdfIn PDF document text
    • http://servempieza.site/lenakelavotogiwid4wfxz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://7afd96e6-4611-46d4-9b98-d111b897c281.filesusr.com/ugd/154221_c90d4ccc13564513b0e3ff9fe1152cd3.pdf?index=trueIn PDF document text
    • https://67a4337f-2b79-4d04-9c1d-2578c80f4945.filesusr.com/ugd/964009_387b57a99f1f4c038b3d9c1b68d1752d.pdf?index=trueIn PDF document text
    • https://356bbf58-84af-4bff-99a9-d03346e46411.filesusr.com/ugd/b5472a_f10f23437190455b92c1d0d998b9e964.pdf?index=trueIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 7

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001206c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1206C 5148 bytes
SHA-256: 702e5ba4ffbd8000d6466ae98e0b007f513e6d4cbdbff45be00ce4dd5eabd2e1

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