Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a1cfafa9049ef45…

MALICIOUS

PDF

61.4 KB Created: 2020-08-01 12:22:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2e62cdf5a34ceb6f4a98c2dcb9892e77 SHA-1: 4fbe24bb5ac6fcc67483fa8bcd6349175703ce2f SHA-256: 0a1cfafa9049ef45b98e332e62a9e5c055e38d00b4f7da882c7d195b6560a064
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, identified as a redirector for SEO link farming. The document body, though heavily obfuscated, contains strings related to software and a URL that appears to be a lure for obtaining a serial key. The ML classifier strongly indicates maliciousness, and the presence of multiple external links points to a phishing or scam 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=sublime+text+2+serial In PDF document text
    • http://files.ramelia-images.co.uk/uploads/1/3/1/4/131437953/9861279.pdfIn PDF document text
    • http://files.airliebeachlovelyindia.com/uploads/1/3/1/0/131069839/loxunujusexu-sapavimodus-xosunojutomazo.pdfIn PDF document text
    • http://files.rockiesparish.com/uploads/1/3/1/0/131070469/guzedifupoxiwuzagone.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/1/0437/5229/2513/files/demubozuwowumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/26674478709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6060/9692/files/15367526412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9917/6612/files/6470371762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3077/2902/files/93781548931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6462/3265/files/86991018025.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/dufugoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/kulapemejuwevoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3920/3221/files/sawabumejunolane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/tesuropo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90840236881.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_off0000a74b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA74B 5276 bytes
SHA-256: 78d8120cfb00b04c99ea3a68c8bd017096c19613f24c6cb96e467c75652d3aeb
font_01_sfnt_off0000b91d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB91D 15384 bytes
SHA-256: d5944eb34d4c62bc473dd0408fef7aeceb7a6af6cd4bf2cb45c7ff5883ea575d

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