Malicious PDF — malware analysis report

Static analysis result for SHA-256 93c0c01358b58616…

MALICIOUS

PDF

41.2 KB Created: 2020-08-20 19:15:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b090db61c1aa28a1a19a3d5d856ef961 SHA-1: 44033553c147033f88e2fa7cf225763e99f73ce0 SHA-256: 93c0c01358b5861612bf055b21fcf31b8b7d10cf4fcfbf73390b30d2fe8c581f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to Shopify domains but ultimately redirect to a malicious URL (ttraff.ru). This indicates a link farm or redirection tactic designed to obscure the final malicious destination. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, but the primary attack vector is the malicious redirection links.

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=materiales+compuestos+derek+hull+pdf+descargar In PDF document text
    • http://files.michaelrlado.net/uploads/1/3/0/8/130814345/84968f914d31c1.pdfIn PDF document text
    • http://files.streetlynxshop.com/uploads/1/3/0/7/130775462/a36de12a.pdfIn PDF document text
    • http://rusezal.auburninvestmentgroupllc.com/uploads/1/3/0/8/130814328/f1df3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0445/5736/9503/files/rinuwoditonedamurovobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6542/5570/files/jeniwolotetiwuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0611/3430/files/66322311066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5425/0654/files/fundamental_of_actuarial_mathematics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0001/0664/files/filosofia_de_la_ciencia_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6480/2982/files/74930371255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0756/5209/files/assam_tet_question_paper_assamese_medium.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2598/8757/files/50347797386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7433/8472/files/makalah_etika_utilitarianisme_dalam_bisnis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7896/7703/files/59304721172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6239/4008/files/remove_newline_from_string_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5461/9041/files/delududilubupet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9363/8811/files/hungry_shark_heroes_hacked_apk.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51FE 5416 bytes
SHA-256: 61bc50ac63083082b3760deec407b82514cc7c345453cf949e714634ca6681f0
font_01_sfnt_off00006471.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6471 10760 bytes
SHA-256: b5088f422075a7be655d95efaf9f6de8bf8df85358803f8a0c79e7fb7c9834b3
font_02_sfnt_off000087dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87DD 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176