Malicious PDF — malware analysis report

Static analysis result for SHA-256 a100a0be8daf4f6a…

MALICIOUS

PDF

46.3 KB Created: 2020-07-30 20:25:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 650ef2c4f9f26969983019f18e25f7b3 SHA-1: a306642c050879c1c295bd26b77ff207fb538b32 SHA-256: a100a0be8daf4f6a52dd916cc71040f3b7625895dc5fb6f3b0c57d487ef7e6f7
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) and are likely intended to lead users to malicious content. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the link to ttraff.cc, indicating it is part of known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic further supports this by identifying a mass external PDF link farm, suggesting an attempt to manipulate search engine results or distribute malicious links broadly. No scripts were extracted, and the document body was heavily corrupted, making it difficult to ascertain the exact lure, but the link farm and redirector are strong indicators of a phishing or malware distribution attempt.

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=reading+comprehension+worksheets+pdf+grade+11 In PDF document text
    • http://files.64trainingsystems.com/uploads/1/3/0/7/130776204/0af3518f200fc.pdfIn PDF document text
    • http://files.bethlehemctcommunitygarden.org/uploads/1/3/1/8/131858916/9150946.pdfIn PDF document text
    • http://files.inlandempireinjurylaw.com/uploads/1/3/1/3/131380546/537162.pdfIn PDF document text
    • http://files.michellerampulla.com/uploads/1/3/1/4/131454216/pafafufik.pdfIn PDF document text
    • http://files.authormelaniejames.com/uploads/1/3/1/6/131606563/lolatotaxiz-batirixuburaxu-bomaw.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/1/0431/5840/5276/files/nakekuxupor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1625/6677/files/xirodukajajegagiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/ronawenexoker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/30429693293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/gukopogibibubitil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2696/3865/files/wiwuzivepajatoketawirut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6943/2230/files/rezokinuxuvonowidudalimef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5674/2046/files/99687965478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kekesapenogetiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9168/8610/files/gafalaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0528/files/jizanorelulik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3305/0779/files/69591675230.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000769a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x769A 5540 bytes
SHA-256: 3683ee56ad2fec71a2a540dc1af272c69b3642ffc6c25a54f8e79ebd6c5f590b
font_01_sfnt_off00008959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8959 10100 bytes
SHA-256: 7e08e43e65d31a0f0120008b9418b7429befc35d61d0565bd3d872532d325781