Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f1c52d1daaf98fb…

MALICIOUS

PDF

43.5 KB Created: 2020-08-08 03:54:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: deb3d6af9c1d9af3f78d974935046e1f SHA-1: b7bde9b9241862d4f5a2da744ef56114b58286dc SHA-256: 8f1c52d1daaf98fb8f157527a999ff09bd69b0c6711931259474c0eead7bb300
194 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier as malicious and contains numerous embedded links. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final malicious destination. Another heuristic indicates a PDF link farm, with many links pointing to Shopify-hosted PDFs. The document body contains garbled text but includes the malicious redirector URL and a benign-looking Shopify URL, suggesting a lure or content stuffing tactic.

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=taller+de+coaching+ontologico+pdf In PDF document text
    • http://files.connieoconnorart.com/uploads/1/3/1/0/131071043/f8fee67712f68.pdfIn PDF document text
    • http://files.ashleighmilne.com/uploads/1/3/1/6/131636954/ximurumesomelureruj.pdfIn PDF document text
    • http://files.unitydenton.org/uploads/1/3/0/7/130776016/5308695.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/1/0436/9920/8346/files/javikawoliwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/metegemekipezafekude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9228/6363/files/66353194592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9911/9013/files/90428174596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3112/4385/files/62274589540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/xarole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3395/9327/files/cta_blue_line.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0340/3678/files/buzixexojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3061/8020/files/hygge_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0509/1745/files/bunan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8694/5187/files/xedur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/13016907835.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 4

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_off00006b6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6C 5188 bytes
SHA-256: 224a5cbfcad0dae6e39477b9a5ced1070ad8dfce907907b5e6113861da3f4f17
font_01_sfnt_off00007d0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D0F 10476 bytes
SHA-256: 1d8dca0c089a744daf30e9cde706aba5a0debab0b902bdc824239ff464b3e85d

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