Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9f908b6d06ca174…

MALICIOUS

PDF

38.2 KB Created: 2020-08-04 19:52:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 633b34db505d479e1fca770d8fe85249 SHA-1: 3f43800ebdff8986d704fcfa44eb023b69824659 SHA-256: a9f908b6d06ca174b4c4b47a3c2bfd0334c40dcf63cfc70f382474899b87dc3f
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting an attempt to create a link farm or distribute content through numerous seemingly benign URLs. The primary malicious URL identified is https://ttraff.ru/pify?keyword=cedaw+pdf+mexico, which likely serves as a gateway to malicious content. No scripts were extracted from this sample.

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=cedaw+pdf+mexico In PDF document text
    • http://files.aprilnieves.com/uploads/1/3/1/4/131453395/dogemas.pdfIn PDF document text
    • http://files.mizpah36.org/uploads/1/3/1/3/131379045/6624586.pdfIn PDF document text
    • http://files.charleswakefieldartist.com/uploads/1/3/0/9/130969577/db9b18f31.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/40948382406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1466/7934/files/18111093028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3638/5181/files/663389901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9605/4690/files/minecraft_dimension_ids.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5535/7852/files/2007_vw_rabbit_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/75892252408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9437/6599/files/49180139729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2620/8152/files/boot_flags_for_hackintosh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/26613457316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2135/2606/files/xefufojebakedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9875/8557/files/38277206963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6400/8610/files/vojoxufipekowalumu.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_off0000585e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x585E 5060 bytes
SHA-256: ffd6220597b61981237574e0b2159ccc44ec228efdb020b9c251a93fcb9e4c4e
font_01_sfnt_off000069a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A2 10180 bytes
SHA-256: 6278d4fc3a430321c54ef9b74bffbefffe65f095bd13d9912cbd51bc0bca9ab2

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