Malicious PDF — malware analysis report

Static analysis result for SHA-256 33225839d068d9a3…

MALICIOUS

PDF

41.9 KB Created: 2020-08-25 14:33:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cabaf4bd163147aa7f32a633b067e475 SHA-1: 5ddcc6118c69f03c8d5cfd6d48ce19413cebe585 SHA-256: 33225839d068d9a3e99b4d083d201a678752d2832a5cf802bad501a2ab362f5f
162 Risk Score

Malware Insights

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

This PDF document is classified as malicious due to its structure, which includes a large number of embedded links. One of these links, 'https://ttraff.ru/pify?keyword=antivirus+free++for+mobile+android', is identified as a known malicious redirector. The majority of the links point to a link farm hosted on Shopify, likely an attempt to manipulate search engine results or distribute further malicious content. The ML classifier strongly supports the malicious verdict.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=antivirus+free++for+mobile+android In PDF document text
    • http://jepetokif.tshra-austin.org/uploads/1/3/0/7/130740609/9c7b4c5a.pdfIn PDF document text
    • http://tiwas.vacationworld.co/uploads/1/3/0/8/130874359/vupaza_mepenupovafisul_sinedem_gebeletodinaba.pdfIn PDF document text
    • http://vexakupu.iamenoughwithgod.com/uploads/1/3/2/6/132681556/9067243.pdfIn PDF document text
    • http://vijowelon.dadeartanddesignlab.com/uploads/1/3/1/0/131070493/4065459.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/1/0428/9947/2550/files/94360420610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/galenuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8135/1839/files/pexumegerezotoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7754/1791/files/74505330292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/12138201732.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0134/8002/files/94276917924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3058/5250/files/fukatiwazatikukux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7314/9859/files/dark_souls_3_immolation_tinder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5440/7578/files/aap_hyperbilirubinemia_guidelines_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9168/0673/files/download_novel_hunger_games_bahasa_indonesia.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 1

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_off000065db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DB 5240 bytes
SHA-256: 9d51d898409bb617af767e3b1e9daa9da4181af616e522037b6768441d7ed902
font_01_sfnt_off00007793.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7793 10200 bytes
SHA-256: 0099851327b9399fcf2217d3ce88c5bb07069134da4d1fd6f826b5cb38a6206b

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