Malicious PDF — malware analysis report

Static analysis result for SHA-256 3534fffb78e07e6f…

MALICIOUS

PDF

43.4 KB Created: 2020-08-19 11:31:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c0095db6e12be97b88b6939bb79f0b68 SHA-1: 1081843022339f81f9a04d0aa0bcbfca0af26c6e SHA-256: 3534fffb78e07e6f7981b2e838106bb7df18ad6f910e9e6458b922e824b47f31
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates a malicious redirector link to 'https://ttraff.ru/pify?keyword=replay+video+capture+free++full+version'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The ML classifier strongly supports the malicious nature of this PDF.

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=replay+video+capture+free++full+version In PDF document text
    • http://files.soundsofthesouthwestchorale.com/uploads/1/3/0/7/130775232/5911820.pdfIn PDF document text
    • http://files.original-items.com/uploads/1/3/2/6/132695525/7437750.pdfIn PDF document text
    • http://files.wageningenstudentfarm.nl/uploads/1/3/1/4/131452883/bezimirozofo.pdfIn PDF document text
    • http://files.moveeasychiropractic.ca/uploads/1/3/2/6/132681336/kejob.pdfIn PDF document text
    • http://bilosajef.myserenitybodylotion.com/uploads/1/3/2/8/132814007/towimates_pozumesavuxob_wotuxal_bawupevam.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7845/1351/files/6889427933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7333/8533/files/73374965780.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9440/0423/files/tomapojajemavamorakemekav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3425/5258/files/17723652227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3572/8794/files/csec_biology_syllabus_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0948/6498/files/canzoniere_scout_con_accordi_reparto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20880330559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2768/5799/files/nedemenika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8468/3166/files/xitapati.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C49 5200 bytes
SHA-256: 51121821bb969fd23a0b90f732d7ec7bbbce4d06ed85fdbb4a06e4e8b720a1dd
font_01_sfnt_off00006e16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E16 11080 bytes
SHA-256: 4f0d439d8cb0692f47499f2309135d106fb09f51b2cce321eaf514a3fbc229b1
font_02_sfnt_off000092bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92BB 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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