Malicious PDF — malware analysis report

Static analysis result for SHA-256 085f04e93a7c5c6e…

MALICIOUS

PDF

46.6 KB Created: 2020-08-06 07:50:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 079b0f7f93896ceafe6d8eb12e448284 SHA-1: b1a521457f14460732a4f8798cca6023cd934da1 SHA-256: 085f04e93a7c5c6e1402b0f94c967dfa097adc2c1c5185137263a4105fa8c432
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to attract users with SEO-optimized titles. This suggests a phishing or scam campaign aiming to redirect users to malicious infrastructure.

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=deductive+approach+definition+pdf In PDF document text
    • http://files.skramstadprimitives.com/uploads/1/3/1/8/131856184/ee0bf22e.pdfIn PDF document text
    • http://files.corolib.com/uploads/1/3/1/8/131856065/juvosip_lezok_fegevewobumuban.pdfIn PDF document text
    • http://files.patrickquinnartist.com/uploads/1/3/0/7/130739117/fujinuropowinewerun.pdfIn PDF document text
    • http://files.pegspoststroke.org/uploads/1/3/0/7/130775792/tuxuba.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/1/0432/0142/9662/files/the_idle_class_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/57464943649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8196/5474/files/fibisorulegemavojul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9182/0711/files/66343681742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1351/2100/files/pituwul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5844/5979/files/fupejigunavejomuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7678/6078/files/duvoxijebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60233972239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4533/9814/files/95115416853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1184/1958/files/64103041126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/refaxanuvotuleferupapuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6187/0746/files/74384229580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6037/9286/files/72075595670.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 2

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_off000079a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79A4 5092 bytes
SHA-256: f15ce63d9d859f2b4102810a191d6b9d80a218a1c02b382fa9bf2f2c947be0e4
font_01_sfnt_off00008b05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B05 10088 bytes
SHA-256: 5ca383d7fbe3aaead656f7a831e7ba2f22bea0eef42945bd0c805b0fbd7554d9

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