Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d71fdc4d79b09f1…

MALICIOUS

PDF

42.3 KB Created: 2020-08-01 17:53:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d71056cd704a3f650d0d7126f05d8fba SHA-1: f3417f9a98468d052751de06850728cac6a54a3c SHA-256: 7d71fdc4d79b09f1af84cf4b1989854eef28fcdd6ffa0b0bd4a7d930bec91bd9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links designed to create an SEO link farm, redirecting users through a malicious domain. The primary redirector URL is 'https://ttraff.ru/pify?keyword=husky+power+washer+1800+psi', which is flagged as malicious. The document body, though heavily obfuscated, contains references to this URL and other Shopify links, suggesting a lure for free downloads that ultimately leads to malicious infrastructure.

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=husky+power+washer+1800+psi In PDF document text
    • http://files.breenabuettner.com/uploads/1/3/1/4/131437623/kogejelox.pdfIn PDF document text
    • http://files.eyeopener2013.com/uploads/1/3/1/4/131438073/gibub_kufilewifuxuso.pdfIn PDF document text
    • http://files.thepigmentgroup.com/uploads/1/3/1/3/131398184/nagetesifubo_xejer_nolimija.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/1/0431/1053/1238/files/understanding_pathophysiology_6th_edition_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7478/1338/files/gopit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4341/3407/files/tavumezajozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3826/0903/files/loturanapafubiwapupobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53059057271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/48266754143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1628/9447/files/xugotijegoresewiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1476/4190/files/jukuvuzivupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2465/3224/files/zamizuxuvifatoniz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6879/2732/files/pudogod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/70401485933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3731/0632/files/nositasanizuputinidowova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5744/6038/files/34814945003.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 3

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_off00006547.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6547 5480 bytes
SHA-256: 00e69c54db4682eb5fcf783fca048ebbeb72068d0b2fc0ff47bfd5c00ad2789c
font_01_sfnt_off000077fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77FB 10540 bytes
SHA-256: a9cb22ee300bc283d54fe62072dd6ea562e9b91191e3d508d91e376c8c7d9058

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