Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe1d4b51bf5861e9…

MALICIOUS

PDF

33.8 KB Created: 2020-08-09 04:59:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4078138a0115faf49a6001caba5bb2d SHA-1: 0405eb450315f81daf1b44f83b4ba9b82880855b SHA-256: fe1d4b51bf5861e9521aafb3b3baebb87849d3d9a07b765a5c21403b60ed90a3
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to a redirector service. The primary malicious URL identified is ttraff.com, which is known to host malicious content. The document body contains a mix of seemingly random text and embedded URLs, suggesting an attempt to disguise the malicious intent. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=believer+imagine+dragons+guitar+pdf In PDF document text
    • http://files.ebfisher.com/uploads/1/3/1/4/131483147/piruvibili-togemewekubeki-zepasiko.pdfIn PDF document text
    • http://files.dregerracing.com/uploads/1/3/1/6/131606951/xexasuxuvonisagexeju.pdfIn PDF document text
    • http://files.loxsalonva.com/uploads/1/3/2/6/132682106/dumapukis_rawokunata_lowasid.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/1/0437/5206/3137/files/wekotokakapelefit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/applied_nonsingular_astrodynamics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5820/0730/files/16997038103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5317/9289/files/tozogubed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3426/4231/files/biodegradation_of_xenobiotics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9708/7390/files/3312629403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8260/4963/files/sarumorojazimixuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/lanudufekakukugulag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7532/9445/files/41624685061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3506/5505/files/mobubuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5557/0341/files/jegakolivaxikizegexemeta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3714/7811/files/fatevu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4730 5472 bytes
SHA-256: 1d0ede1bb845d20c5feb471af4bf9a03e18f316069e7a3dd66541278f6a7744e
font_01_sfnt_off000059c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59C0 9620 bytes
SHA-256: f3e17362c18bd9fff63d8fda22a49874da182a853c7d6329d7798637c3fbff03

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