Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2b5a2541c548b09…

MALICIOUS

PDF

43.7 KB Created: 2020-08-10 02:43:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a9da25446f86fe9eefb331a1623aa603 SHA-1: 7adb0bfd94051bc2d73ab430e1aa04ad358facc6 SHA-256: c2b5a2541c548b09a06f4c4d304cfc5b6e35903dee100c5d2ce6c24aed0f66c6
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though partially garbled, contains the same URL and a plausible lure related to 'cancer de pancreas nutricion pdf'. This indicates the PDF is designed to redirect users to malicious infrastructure, likely for further exploitation or phishing. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious PDF.

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.com/pify?keyword=cancer+de+pancreas+nutricion+pdf In PDF document text
    • http://files.danafosmer.com/uploads/1/3/2/8/132816165/414b7a48a22.pdfIn PDF document text
    • http://files.vcgallery.org/uploads/1/3/1/8/131856381/rokererukirejakifu.pdfIn PDF document text
    • http://voxituwa.peoplesresponseteamchicago.org/uploads/1/3/1/3/131384429/xulizorafakepoveziz.pdfIn PDF document text
    • http://files.drcolinadunbar.com/uploads/1/3/1/4/131453605/zulomemasurabexele.pdfIn PDF document text
    • http://files.michimathias.com/uploads/1/3/0/9/130969446/vobebiwarofab.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/1/0435/5411/1656/files/35352711695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1207/7206/files/materi_avertebrata_air.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4024/2840/files/24552412999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/47718062116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/buberibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/metegemekipezafekude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1071/1971/files/zibofam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0792/4635/files/luponikikepoweze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/sasapikexugelasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/10243476159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3469/8147/files/26858032033.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 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_off000063c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C2 5024 bytes
SHA-256: 337dfb48b25ee1f9ce24aced7c614f8d779aebed95d45ee6c4b928cb9dbaeeca
font_01_sfnt_off000074e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74E2 14408 bytes
SHA-256: e872d9dd5ace1b9bf0b8438154a883035509452b033b54631739f57faa60abef

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