Malicious PDF — malware analysis report

Static analysis result for SHA-256 a51680b55d3a47e4…

MALICIOUS

PDF

48.6 KB Created: 2020-07-26 12:54:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d9020f1bbed725dd675fe990fcfa77fe SHA-1: db999e4e279bc9b1d7e7138969df5fb237d00c7b SHA-256: a51680b55d3a47e457e81a2016a4f143e9cde1370b26241c69d483b119cfcffc
202 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, traff.cc, which is likely intended to lead the user to a malicious payload. The document also contains a mass external PDF link farm, with many links pointing to Shopify domains, suggesting an attempt to obscure the true destination or leverage legitimate platforms for hosting. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=iso+9001+audit+report+writing In PDF document text
    • http://files.lytlethelemur.com/uploads/1/3/1/6/131606003/xavemamoxuk.pdfIn PDF document text
    • http://files.synodalcatholics.org/uploads/1/3/1/3/131378952/suliregebopo.pdfIn PDF document text
    • http://files.shannonvilledrags.com/uploads/1/3/0/7/130775108/jakegegowi_maxaxajudena.pdfIn PDF document text
    • http://files.maaloufashford.com/uploads/1/3/1/4/131438427/3313529.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/1/0438/0462/3010/files/44587544554.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0240/4769/files/18893624719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4626/4213/files/xanogufexorikevixobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71482320097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/44286863167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/2236140869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3133/0969/files/pevitalawofug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4525/6344/files/99177417286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/85708314441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0645/2127/files/94307199601.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_off0000805e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x805E 5356 bytes
SHA-256: 28ae6b9763a190dde752008d33ef750a272fe3d5f360fab348995e5182e8d2fb
font_01_sfnt_off000092b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92B1 10228 bytes
SHA-256: c6f9526b7743990abc8dc3d4a5e1df7fc9f53e04d564728cf6dea5cb26f6c64b

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