Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f2e0ef94a7be730…

MALICIOUS

PDF

38.7 KB Created: 2020-08-01 13:32:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e21e39aa1c953c699a717491a5c2bc22 SHA-1: c70c70daf5c8b029ce0c6727ae9be54f96b5bc52 SHA-256: 0f2e0ef94a7be730ef0ca9acd7b013962bdf97b67afd591fb572db5f8abe671b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service at 'ttraff.ru'. This service is likely used to obscure the final destination of the malicious links, which are presented as a link farm for SEO purposes. The ML classifier also strongly indicated maliciousness.

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=kentucky+weight+distance In PDF document text
    • http://files.natureswaybotanical.com/uploads/1/3/0/8/130873795/7111074.pdfIn PDF document text
    • http://files.officialmyrtlebeachsports.com/uploads/1/3/0/8/130813821/6082037.pdfIn PDF document text
    • http://files.albertoniego.com/uploads/1/3/0/7/130776812/garexotiku_wivopevatuki_movuner_nugibotuso.pdfIn PDF document text
    • http://files.ps244q.org/uploads/1/3/0/8/130814717/topuwitasideladakewu.pdfIn PDF document text
    • http://files.worldwide4travel.com/uploads/1/3/1/0/131071145/notabizodifefewol.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/1/0432/6585/1542/files/xenuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/96026217513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8983/6697/files/37949535236.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6097/6021/files/sumijexaluvatatavab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4339/6506/files/genibupaxowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0152/0029/files/gazisef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5253/8773/files/battlestar_galactica_the_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/10374462198.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37741658126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3735/0309/files/botulijaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4526/5312/files/rivazev.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_off000059b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59B7 5300 bytes
SHA-256: 43e11c49f417fe68f05ee06ee02ef738ab71709258de374c3a9fde79bf81d543
font_01_sfnt_off00006bdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDF 9892 bytes
SHA-256: 47644b9455d74117b1b41eb9c1e55d36f678b93004f69d09533e8c7172c1d02e

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