Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8e473ffa42c6467…

MALICIOUS

PDF

45.5 KB Created: 2020-07-28 23:22:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d81afd9a1e816beabb7018bc86051713 SHA-1: 5bfb366d23ef74e529d9e87f42cb3d2f440d49ba SHA-256: a8e473ffa42c6467264b9fb139aed17507af83b1726a049b18608282d282837a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. This URL is designed to redirect users to further malicious content. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, appears to contain metadata related to 'blood type personality theory pdf' and wkhtmltopdf, suggesting a lure to entice clicks on the malicious link.

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.cc/pify?keyword=blood+type+personality+theory+pdf In PDF document text
    • http://files.maynardcattleco.com.au/uploads/1/3/1/4/131483307/012093c.pdfIn PDF document text
    • http://files.howwecomeapart.com/uploads/1/3/0/9/130969656/kesezomeru_gowipepix.pdfIn PDF document text
    • http://files.quartetaccord.com/uploads/1/3/2/7/132740343/db232420594c.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/1/0431/6404/1373/files/28159451091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4071/8493/files/34814704779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1077/5464/files/41193174123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4026/0775/files/64274644274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4529/8077/files/jolelagetuvewuzafekajesiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2746/3324/files/84667507519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5117/1478/files/xuziruvikal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2190/9667/files/91263006556.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1459/4464/files/1635101288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2745/6419/files/wanejiratedususesojoletu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8015/5289/files/97972296812.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 1

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_off00006906.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6906 5068 bytes
SHA-256: 9aa4f2dd2a18bb0ffeab23557010eeb7e41bcfc12bec279900b5e4ab69f6309e
font_01_sfnt_off00007a3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A3D 14916 bytes
SHA-256: 9be5cf19d6c532160c2de75018b6b61d75a516ba2b0ab6ad6080edd33dc8b0c6

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