Malicious PDF — malware analysis report

Static analysis result for SHA-256 990a41651cdbf301…

MALICIOUS

PDF

38.6 KB Created: 2020-08-06 21:20:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 454946603ada049a703ea738969c8ef2 SHA-1: ed6d645a5cf4da6c7d3cf639843f0d811b2c9e44 SHA-256: 990a41651cdbf3019c705115f82aaab5fbadaf7d11d8c5236fa2c47bb7c89a44
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=cahier+de+vacances+ce1+ce2+pdf'. This URL is likely part of a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on Shopify, suggesting a tactic to obscure the final malicious destination. The primary intent appears to be luring users to potentially harmful websites.

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=cahier+de+vacances+ce1+ce2+pdf In PDF document text
    • http://files.4thoughtpsychology.com/uploads/1/3/0/9/130969885/767b9a1.pdfIn PDF document text
    • http://files.lilyenvironmental.com/uploads/1/3/0/8/130813320/79a2b8c30.pdfIn PDF document text
    • http://files.assertion-evidence.com/uploads/1/3/1/4/131453904/misulofoxope.pdfIn PDF document text
    • http://xagamanur.norwicharcheryclub.com/uploads/1/3/1/0/131070872/kogejoxuxosu.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/1/0433/8712/5927/files/rutegokasemavodidiriwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/51264780290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9315/5230/files/36297184735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5538/0645/files/11886730062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/55289018360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5319/5157/files/blade_house_of_chthon_cast.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6550/5952/files/xibiwavinatoxof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6225/3978/files/sufibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0709/8529/files/megafinufuzuvutefuwab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1149/7366/files/lenukakupidawipufozevuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/getavexizoxerexotuvifuna.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 7

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_off000054f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54F1 5360 bytes
SHA-256: b3a7fbd560935e8c772f6b0f0e9c2d686d198a454aab72b4a406b8fd091b317e
font_01_sfnt_off00006731.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6731 11616 bytes
SHA-256: 2a4b91797646a719086d66119d6b880cf65d33b18fbdcfe3d01aba552d488acb

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