Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a8e75af55b31bc4…

MALICIOUS

PDF

47.9 KB Created: 2020-08-09 01:48:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9b2ab2761a54aa607323d8bfc410f54e SHA-1: 1148f56bb9cdd6cf099eaf1857e50f8de5a8ac8f SHA-256: 1a8e75af55b31bc415e366e1bc7f60794c59d946cc308ad2e983c9387707409b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link disguised as information about peripheral artery disease treatment. This link points to ttraff.ru, which is flagged as malicious. The document also contains a large number of embedded links, many hosted on Shopify, which is indicative of a link farm used for SEO poisoning or to obscure the final malicious destination. The ML classifier strongly flagged this PDF as malicious.

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=peripheral+artery+disease+treatment+pdf In PDF document text
    • http://files.italianstonedesign2019.com/uploads/1/3/0/7/130775921/33de9fbc0.pdfIn PDF document text
    • http://files.myfutra.com/uploads/1/3/1/3/131384018/netax.pdfIn PDF document text
    • http://files.codywbenjamin.com/uploads/1/3/2/7/132710627/1164149.pdfIn PDF document text
    • http://files.peakhealthcaremaryland.com/uploads/1/3/1/4/131406816/rizapisopasiraluzoga.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/1/0435/4798/4026/files/55618246920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0298/5621/files/prevention_of_sc_st_atrocities_act.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dojezurin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6359/1590/files/tapitokivadivinus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fesulemenakasisot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3468/files/jagurewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9746/3714/files/68475827322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4380/5594/files/27256324011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5547/1002/files/fowipiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55079075607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3367/4396/files/nizilakekituxararopowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejupabofutub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9491/5738/files/9595374139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3378/6530/files/7583310402.pdfIn PDF document text
    • https://medlineplus.gov/peripheralarterialdisease.htmlIn 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 8

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_off00007c7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C7D 5384 bytes
SHA-256: b7749cf54c0a9e016b2bb6bdb4401d24b01611e4aed182eefcae1ae0feec008e
font_01_sfnt_off00008ea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA6 10452 bytes
SHA-256: 22196ffd848630f7641a8722956ce1e6361fcbe660bab5cd058f0bcc8b3aa53b

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