Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a4ba7464f726cf0…

MALICIOUS

PDF

43.4 KB Created: 2020-08-23 10:06:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3b44b40d3aa59c05a96baf7b44be2537 SHA-1: fb38cae6e4a1d008f8453c7caf543736ab066909 SHA-256: 2a4ba7464f726cf08e311fee300fb61b650c285c8405589fccdd1e7150192daf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link to 'https://ttraff.ru/pify?keyword=assamese+dj+remix+songs'. This indicates the document's primary purpose is to redirect users to potentially harmful sites. The presence of numerous links, many hosted on cdn.shopify.com, suggests an attempt to obscure the malicious destination or leverage legitimate platforms for distribution. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=assamese+dj+remix+songs In PDF document text
    • http://files.comfort365hvac.com/uploads/1/3/1/6/131607163/4806117.pdfIn PDF document text
    • http://diwopov.minorcanmayhem.com/uploads/1/3/1/3/131381428/574c75310d0a5.pdfIn PDF document text
    • http://files.texasbestbrushes.com/uploads/1/3/2/7/132740519/mosuvurixaluzojonud.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/sintomas_de_la_anemia_falciforme_wikipedia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4653/5322/files/letubefepetagumefije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8891/2290/files/fomukogupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/15828201624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5715/1129/files/html_center_text.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1793/4747/files/sigolugijutotumizajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0531/2163/files/elementary_stats_triola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/8127/4278/files/the_rocking_horse_winner_summary.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 5

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_off00005234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5234 5248 bytes
SHA-256: 1b7756d90cc49cb1da4092445fbcdd6b50ef3341ff0b97de543b6cf86a4cf68e
font_01_sfnt_off000063fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63FE 13856 bytes
SHA-256: 5459b13ddee59ab165ac40040b5c8df7caeccbaa48ce67854f789d3f93a840cd
font_02_sfnt_off00008fa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FA7 4684 bytes
SHA-256: df0d3063ba15a5f1f1c872829c737c39a88a0fd684b5df2e3dc6392ec70e7f36

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