Malicious PDF — malware analysis report

Static analysis result for SHA-256 262d87755af4d44e…

MALICIOUS

PDF

43.0 KB Created: 2020-08-11 08:41:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d9a0d755b238b33727c9bc9f6f8e363d SHA-1: c7064eb7f380fd111abf08bce5f41b9a947a4780 SHA-256: 262d87755af4d44e4aaa32ed604c5351c8c3fe27a25eea4f8952aa4157dad40f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely intended to lead the user to a malicious site. The document body and embedded links suggest a lure related to medical complications, likely to trick users into clicking the malicious link. The ML classifier strongly supports the malicious verdict.

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=komplikasi+hernia+inguinalis+pdf In PDF document text
    • http://files.keyvanpaydar.com/uploads/1/3/1/4/131407796/rosemupe_naramafololovuw.pdfIn PDF document text
    • http://files.la-enthusiast.com/uploads/1/3/1/3/131398129/3756468.pdfIn PDF document text
    • http://kajire.mysticplanet.shop/uploads/1/3/2/8/132814930/c244fe00faa.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/1/0437/5294/7873/files/sebatudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7792/6040/files/lowes_fernley_nv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7414/1864/files/gefadujajebufuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13170590630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78476378890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8265/9493/files/luzezakorul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/22620034033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1621/4939/files/gafoxagutanimisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4082/3701/files/autodesk_trueview_export.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/nulego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9914/3838/files/8369565925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/small_to_ppt_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7048/7712/files/fudasitevibodosore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1279/2225/files/86744326702.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
🗂 Part of campaign: keyvanpaydar.com 4 samples

Related samples 7

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_off00006a53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A53 5488 bytes
SHA-256: 1e3fe1bb0ddcf054cd9f8c7eab3c0bf9dbfad2c2bf24b328782a2fa5e13de496
font_01_sfnt_off00007ccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCF 9960 bytes
SHA-256: 5cc772a538a12a6003928c3ad92595672c2eb5f4639dd0108b581881283d41e8

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