Malicious PDF — malware analysis report

Static analysis result for SHA-256 673976f146792c9c…

MALICIOUS

PDF

44.8 KB Created: 2020-08-07 01:52:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6d0bfc44f51f67b62cc8a309eb1d38d7 SHA-1: 060b9f79939ce32050e727932bd2735284b0338b SHA-256: 673976f146792c9c76dcbed3dca5c2a8aa6dc7d19ed932ef4a53e141f4358c8e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with a critical heuristic identifying a redirector link to 'ttraff.ru'. This suggests the document is part of a link farm or phishing campaign, using a lure related to 'st louis blues sheet music pdf' to entice clicks. The ML classifier also strongly indicated maliciousness, supporting the assessment 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.ru/pify?keyword=st+louis+blues+sheet+music+pdf In PDF document text
    • http://files.hazeltones.com/uploads/1/3/1/3/131383333/60863af0.pdfIn PDF document text
    • http://files.victoryfitnesstimmins.com/uploads/1/3/0/7/130775427/nefup.pdfIn PDF document text
    • http://xuwiz.westsidetrackclub.org/uploads/1/3/1/3/131380005/2cdcae.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/1/0432/0670/5312/files/72112868322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/97291101244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0349/5071/files/kimilige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6346/7414/files/nenisofevaxinakefuxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8568/5153/files/43249183987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9456/5271/files/30846400946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2072/2080/files/advanced_language_practice_michael_vince_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7868051279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5534/8888/files/simumapojolefosuwolises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7086/2998/files/10385357069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9229/6358/files/54622939849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5109/8007/files/56323220429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4192/2982/files/30866705827.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
🗂 Part of campaign: entacobowlsclub.com 4 samples

Related samples 3

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_off0000657e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x657E 5332 bytes
SHA-256: caa91a24bc4789cdf98082c2cedd36f06d438c7aba7443acfe45f0d6ee5c8048
font_01_sfnt_off0000777b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x777B 14940 bytes
SHA-256: cce845c651a155dd04e35a90b7121921e38194eaca8e1453da54d7e6a5557527

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