Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eca83a62995a7e1…

MALICIOUS

PDF

41.8 KB Created: 2020-08-19 14:18:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ab93cbfdc85610fbb37a5f840146c84f SHA-1: 96a8723e63e0f9708166d8f955d68e6da0555f9e SHA-256: 2eca83a62995a7e1798d03191dbac60867742728293a2ddeeee1533f350b7349
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, disguised with text suggesting a 'Matlab installation guide pdf'. This link, 'https://ttraff.cc/pify?keyword=matlab+installation+guide+pdf', is designed to lead users to malicious infrastructure. Additionally, the PDF exhibits characteristics of a link farm, with numerous external links, and the 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests it may be part of a multi-stage attack involving password-protected archives.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://ttraff.cc/pify?keyword=matlab+installation+guide+pdf In PDF document text
    • http://files.somabodytherapy.com/uploads/1/3/1/3/131378899/jurimenogetusafudige.pdfIn PDF document text
    • http://files.queenieproductions.com/uploads/1/3/2/7/132740288/893039.pdfIn PDF document text
    • http://files.wesleycollegecollective.com/uploads/1/3/1/4/131437276/2901611.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0328/1571/files/past_simple_past_participle_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2117/1864/files/fundamentals_of_investing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/antimicrobial_stewardship_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6057/5912/files/begakosavawepogekazev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/xonitakonizosaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8999/1582/files/26791444976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8579/1393/files/milurevenaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6702/3253/files/48350250383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5181/7883/files/duel_masters_episode_1_dubbed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8611/7019/files/jipeduperubenurave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1460/0342/files/tinkers_construct_guide_1._12.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/3356120034.pdfIn 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

Related samples 4

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006539.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6539 5260 bytes
SHA-256: cff714e988607736cec226f09f004c4bf68187dd0c4513959d63c2f39c1280ce
font_01_sfnt_off0000772d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x772D 10300 bytes
SHA-256: 5e6ce162157de5bdaa2aebafb2ca240279c9494667c2445b39780dd43dc84f93

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