Malicious PDF — malware analysis report

Static analysis result for SHA-256 79d21dd10ed94e0a…

MALICIOUS

PDF

42.5 KB Created: 2020-08-18 20:20:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7191f430df826c794bf574a90b826be1 SHA-1: 349b6dc1fb639803cb3fb01ac0546d28389acb7e SHA-256: 79d21dd10ed94e0a2f777b6a6df3a7bb8324996ff506ee2f3c0682e0194bf055
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service known to host malicious content. The document body, though heavily obfuscated, contains a URL that matches the suspicious redirector. This suggests the file is part of a link farm or SEO poisoning scheme designed to trick users into downloading malicious files or visiting compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.ru/pify?keyword=full+body+fly+sheet+horse In PDF document text
    • http://files.whereintheworldiscaseykey.com/uploads/1/3/0/7/130738504/seloko-tomag-vajemisejinal.pdfIn PDF document text
    • http://sasakix.jesusourredeemerlc.org/uploads/1/3/1/1/131164250/48980acef5010c.pdfIn PDF document text
    • http://files.jamaicavibez.com/uploads/1/3/2/8/132814050/7ced903a55da63.pdfIn PDF document text
    • http://jakenewe.piecemakersquiltshop.com/uploads/1/3/1/6/131636725/zubefokenalizomip.pdfIn PDF document text
    • http://files.yarmouthportlibrary.org/uploads/1/3/0/7/130776602/wizizomedib-sugodafafu-befakaragev-dikomapevomek.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/1/0429/2807/9004/files/qaseeda_burda_shareef_full.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2539/2035/files/23273989455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9824/7069/files/17_note_kalimba_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2402/3715/files/mahatma_gandhi_biography.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7492/6230/files/ielts_speaking_questions_part_1_2_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2076/3804/files/6246342352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3957/9546/files/rexixilibuvaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6086/9785/files/fakemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5231/7342/files/ata_chapters_complete_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3653/2136/files/45899755405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0890/7688/files/buffalo_wild_wings_to_go_menu.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 8

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_off00006b43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B43 4984 bytes
SHA-256: de6c62acaf25ec4bde407391d6a2e4232bb5d190b1c0069fbb8cfc2f8b07e654
font_01_sfnt_off00007c30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C30 9752 bytes
SHA-256: 85966958113b6b45905b1ef7c04fa7ae999a9f94930956aa34f50a620d750b69

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