Malicious PDF — malware analysis report

Static analysis result for SHA-256 861e979876062fed…

MALICIOUS

PDF

39.0 KB Created: 2020-08-08 01:26:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0700cdd5d9d83fbe3d2aa195e1f56559 SHA-1: 9d0806b157d1cfcafdcbcce426477ad2d36a1f78 SHA-256: 861e979876062fedc83f7efd2dda5dbbe70381ed89583e5cc64563f2038da05a
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, many of which point to a redirector service that is known to host malicious content. The document body and embedded links suggest a lure for free downloads, likely to distribute malware or conduct phishing. The ML classifier strongly indicated maliciousness, and the presence of redirector links reinforces this assessment.

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=bach+fugue+bwv+1000+guitar+pdf In PDF document text
    • http://files.mintkids.online/uploads/1/3/1/3/131384359/9792562.pdfIn PDF document text
    • http://files.kyleyatesphoto.com/uploads/1/3/2/6/132681901/zubunage-fugejazawosuk-bofezo-nosakuzubadofam.pdfIn PDF document text
    • http://files.jwpcc.org/uploads/1/3/2/6/132680808/5201679.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/1/0428/3059/4204/files/xikazewuninipijegevan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0741/6219/files/hyperbole_and_a_half_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0365/7887/files/advanced_calculus_fitzpatrick.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6750/6837/files/woxofowewuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0911/3240/files/fadupelokowezuza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/9604/3674/files/the_transnational_capitalist_class.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0801/6027/files/jutotatiwisimekanufiziwap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7485/3793/files/lilufir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/sprinter_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5458/7288/files/ssh_config_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0453/2648/files/momilusewaduvu.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 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_off0000580d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x580D 5740 bytes
SHA-256: f0259684428e10f52bb4505841a1dadeae5ae441324c8214d6047977e6d8249c
font_01_sfnt_off00006bb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB1 10444 bytes
SHA-256: f37e1087950ff262d25a7be25699e19ddd77dc2e34b98d05f61ef21bd0448bc1

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