Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b76925c9ac329ba…

MALICIOUS

PDF

40.4 KB Created: 2020-08-03 05:04:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b585dc23256bfb6a807a75381cb0e67 SHA-1: faa599c2321a55a57730e16e7713329d40b70baf SHA-256: 5b76925c9ac329ba3ed7d0d51705f2e5aeadfc0ab5440de7026c19fcbd496933
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 SEO link farm, masquerading as a solutions manual. The primary redirector URL is https://ttraff.ru/pify?keyword=rogawski+calculus+early+transcendentals+solutions+manual+pdf, which is flagged as malicious. The document body itself is heavily obfuscated and contains a reference to this malicious URL, suggesting an attempt to trick users into downloading further malicious content.

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=rogawski+calculus+early+transcendentals+solutions+manual+pdf In PDF document text
    • http://files.patientmind.org/uploads/1/3/0/7/130775265/8274594.pdfIn PDF document text
    • http://files.happyhomevegan.com/uploads/1/3/1/1/131164048/f2fb5dd3c08ca.pdfIn PDF document text
    • http://files.stpaullutheranhartley.com/uploads/1/3/1/8/131871390/webemanizid.pdfIn PDF document text
    • http://files.highlanderteach.com/uploads/1/3/1/4/131407635/ruwado.pdfIn PDF document text
    • http://files.littletownbakeshop.com/uploads/1/3/1/3/131379406/wudatujeweruj_rewusokuru_zagusador_mitidumaw.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/1/0433/0687/7080/files/59577082877.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7988/3170/files/wotafur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/47501595657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7812/3680/files/43704356281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7143/1065/files/91469598761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9360/6046/files/quest_diagnostics_requisition_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1438/8892/files/bavagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/4585954034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6753/9623/files/xegabuvolulasow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5752/1574/files/zitawoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1714/0386/files/euro_pick_up.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6128/8868/files/44425995327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5208/1053/files/bojiraximabefagexovole.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 6

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_off00005ced.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CED 5740 bytes
SHA-256: ac318c23d64c3a536b556e3b3da244e1a6c7cf1ebca804d084358ecdc7908fff
font_01_sfnt_off00007091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7091 10228 bytes
SHA-256: b1149e60419d16ee51c85d1a1203f6a2547b7e44ade0b7d5aacab78098361f67

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