Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ce6ee0f6fd48276…

MALICIOUS

PDF

77.7 KB Created: 2021-02-27 18:23:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 5b80df53ca2a0fc6af5a8106e8ea054c SHA-1: c4cb88b641c2d9c364022af85e0115a1edb0526a SHA-256: 5ce6ee0f6fd4827664612b93a74bcedaf7dc99fcee708f0c91a3df08296e8aee
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is part of an SEO link farm and a free-download phishing scheme. It directs users to a URL that is likely a phishing or malware distribution site. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8501

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://pelibifir.ru/award?keyword=interior+design+colleges+in+dallas+texas PDF link annotation
    • https://bavifevip.weebly.com/uploads/1/3/6/0/136049805/timenujabelatugex.pdfIn PDF document text
    • https://cdn.sqhk.co/tupujokuz/OOfFjht/gimenonoboforanikiker.pdfIn PDF document text
    • https://cdn.sqhk.co/purorelaz/eIib6B2/planet_waves_guitar_tuner_how_to_use.pdfIn PDF document text
    • http://xevusezes.medianewsonline.com/32098113441.pdfIn PDF document text
    • https://koropiliful.weebly.com/uploads/1/3/0/7/130740252/5182839.pdfIn PDF document text
    • http://zisuroto.mygamesonline.org/vocabulary_booklet.pdfIn PDF document text
    • https://mepodatadun.weebly.com/uploads/1/3/1/4/131452799/rexojanojitino.pdfIn PDF document text
    • https://cdn.sqhk.co/zibavuna/ugggiah/bass_booster_eq_music_player_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/rojarimeg/b1ggeJQ/miragine_war_cool_math_games.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/cengage_chemistry_class_11_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/black_and_decker_easy_feed_trimmer.pdfIn PDF document text
    • https://s3.amazonaws.com/posaxugidut/glencoe_mcgraw_hill_algebra_2_practice_workbook_answer_key.pdfIn PDF document text
    • http://kapirexazi.onlinewebshop.net/the_power_of_positive_thinking_book_download.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/mercedes_benz_c_class_2017_manual_transmission.pdfIn 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_off00010417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10417 5112 bytes
SHA-256: 8bf8df4270cdd89bcfb2a3b27c8b6df98dce6bd9604fff3c2957cdc4a77f624c
font_01_sfnt_off0001158e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1158E 10732 bytes
SHA-256: 9df2a747271edc63a82e5742a35b47669ff4968b1ed3dc282ab80de15abfb707

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