Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cf3508eacccf8a9…

MALICIOUS

PDF

43.8 KB Created: 2020-08-01 05:36:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d6eda038c088e8f0903f20ba1fd62c0d SHA-1: e8a006dfafa29369cb25b733743a16469f585ca3 SHA-256: 6cf3508eacccf8a94548a8c9f46a9369c1190cdc686ca03111420830bff22fb1
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service known to be associated with malicious activity. The primary redirector URL is https://ttraff.ru/pify?keyword=thunderdelve+mountain+pdf, which is used to obscure the ultimate destination. The document body itself is heavily obfuscated and appears to contain the same redirector URL, suggesting a deliberate attempt to lure users into clicking malicious links for phishing or malware distribution.

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=thunderdelve+mountain+pdf In PDF document text
    • http://files.globallearningadventures.com/uploads/1/3/0/8/130874451/gixewuvelesa-zonajige-tajobujig-baxadominulo.pdfIn PDF document text
    • http://files.mycorporateteambuilding.com/uploads/1/3/2/3/132302978/68c5c659.pdfIn PDF document text
    • http://files.nancyhendersonwriter.com/uploads/1/3/2/8/132816036/repelodaki.pdfIn PDF document text
    • http://files.jerronjorgensen.com/uploads/1/3/1/4/131407635/1d1c404d1f4d7.pdfIn PDF document text
    • http://files.hillcountrymarines.org/uploads/1/3/1/8/131856039/e7d319.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/1/0434/7818/8198/files/97597443299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69262577592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9358/0189/files/85910264897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4958/1730/files/vevunudipipipawirewepemax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1431/5422/files/72420042032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3001/9229/files/65789346472.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/87087086976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7470/7868/files/nikifusisowemililerena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9440/8357/files/wakewij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7442/7806/files/vulew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8131/1132/files/32405398319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6610/5759/files/45314265371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4026/8711/files/95497446457.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_off00006d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D6F 5112 bytes
SHA-256: ea96da70263a0e86bdfca10ad4f9f215a99da3f719ba50ddd0165305abd5575e
font_01_sfnt_off00007eab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EAB 10304 bytes
SHA-256: 4363307416a0a77a469b1406d0db8707fec0a0f872690747a224bda1a7042709

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