Malicious PDF — malware analysis report

Static analysis result for SHA-256 8686fdd485cdb948…

MALICIOUS

PDF

76.3 KB Created: 2020-08-06 18:25:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cc46eff2af82ae146d601121b6b0ed19 SHA-1: eec6b0fb599e0e4bc10649990656b69d9664d671 SHA-256: 8686fdd485cdb94828b6c3f6827e20d8de195c57ee1d33c71121140dffcb22a9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. This suggests an attempt to direct users to malicious content or phishing pages. The presence of a link farm heuristic further supports this, indicating a large number of outbound links designed to appear legitimate. No scripts were extracted, but the overall structure and malicious links point to a phishing or malware distribution attempt.

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=candelario+obeso+pdf In PDF document text
    • http://files.carolannliaros.com/uploads/1/3/1/4/131438464/5f6e1439dc949.pdfIn PDF document text
    • http://files.nineacresfarm.com/uploads/1/3/0/8/130813357/6911875.pdfIn PDF document text
    • http://files.namibiatourism.info/uploads/1/3/1/3/131380175/86d53c608.pdfIn PDF document text
    • http://files.afkclothingcompany.com/uploads/1/3/1/3/131398419/8899016.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/rerisorajomowuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3956/1630/files/27195517473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2277/6480/files/55262704339.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4447/0933/files/lanigisusulasilifabosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekosipavejidowusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3685/9813/files/41645301690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2269/6096/files/83062961688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5381/8790/files/auralic_vega_g1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4351/2732/files/l_alchimiste_arabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5468/6617/files/vibobowujizasidisapimizem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7926/8520/files/destination_a1_a2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3040/4506/files/suzixesijusavidonilisepip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7217/5781/files/sifadegula.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_off0000ed24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED24 5080 bytes
SHA-256: 3167dab6f3af8c47812b988c9ef7c639faff0b1a71b0fbf96a8bc6ba221e1d3e
font_01_sfnt_off0000fe6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6B 11044 bytes
SHA-256: 6cab033e6a7873398696bf87549f992dac81d14e8ef8d9d853b2a10fe4827280

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