Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd6c5a040c17e7ea…

MALICIOUS

PDF

43.8 KB Created: 2020-08-02 11:58:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e1398ee0fa780bd056d0059520a8d6d3 SHA-1: cb9d6b71ef1f9a93adad244274cabf2198149370 SHA-256: fd6c5a040c17e7ea37da59218891c6bb28ed55aea92c74d16a838ca87366ce12
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains numerous embedded links. One of these links, 'https://ttraff.ru/pify?keyword=three+js+github', points to a known malicious redirector. The presence of a link farm suggests an attempt to distribute malicious content or conduct phishing operations. No scripts were extracted, but the structure and link farm indicate a malicious intent.

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=three+js+github In PDF document text
    • http://files.lillymholland.com/uploads/1/3/1/4/131437683/7bd370c.pdfIn PDF document text
    • http://files.savemetislighthouse.org/uploads/1/3/1/0/131069789/vemopegeju.pdfIn PDF document text
    • http://files.seattlegolfnews.com/uploads/1/3/1/1/131163737/1925660.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/1/0428/9835/8432/files/11783771814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7668/8798/files/73101799362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4490/5884/files/pokemon_gif_sprites.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3880/2073/files/nuxejip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/dimupinisikon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3685/8776/files/91949580418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58585016777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0945/6803/files/jaxemajaxunumikomifariv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1839/4527/files/google_baseurl_search.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2754/5763/files/ximidipilijomig.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 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_off00006281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6281 4872 bytes
SHA-256: 471e448d0cf907fbf9a1d546e35a70643720aee466893ec5e6e834bf405c9dd8
font_01_sfnt_off00007311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7311 15004 bytes
SHA-256: 04952d7e5bd32fd53bd6c26db15da554c6d0a50b59bf4d28ce9331979bd675d1

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