Malicious PDF — malware analysis report

Static analysis result for SHA-256 03194951d172f1aa…

MALICIOUS

PDF

33.7 KB Created: 2020-08-11 17:21:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 875e9aae02c52b44e736ecb4e7c2d82c SHA-1: b01ec6f59cb3f0c6af81af43205876eb04c09343 SHA-256: 03194951d172f1aa370ddd397b9660554bdf9c900a607d6b884045317bd57f79
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to an SEO redirector, which in turn points to a malicious URL. The document body, though heavily obfuscated, contains references to the primary malicious URL and several benign-looking Shopify links, likely part of a link farm to improve search engine ranking for malicious content. The ML classifier strongly indicates maliciousness.

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=chapter+24+milady+pdf In PDF document text
    • http://files.donread.net/uploads/1/3/1/6/131637701/7868662.pdfIn PDF document text
    • http://files.signmechanics.co.uk/uploads/1/3/0/8/130814252/doboxuwa.pdfIn PDF document text
    • http://files.gevebe.com/uploads/1/3/1/8/131871727/7f7b6c43.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/1/0430/9978/3319/files/22411684616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1540/4695/files/sajuzoridokujopibopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/keto_diet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8867/4967/files/32874503428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9451/5614/files/72401630010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9746/4731/files/mijefade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8378/4601/files/always_remember_us_this_way_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1605/1112/files/bargaining_for_advantage_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/xedolukap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1483/1780/files/zevije.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_off00004924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4924 5332 bytes
SHA-256: c6da3e9fdba50f9a87123531a76bb704ce7eb13db287741df2cfc5408445b79e
font_01_sfnt_off00005b32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B32 9240 bytes
SHA-256: c71bd943089622b28a5a35115999bfc9d3562508100235ef787795814c56a0a8

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