Malicious PDF — malware analysis report

Static analysis result for SHA-256 501293bdcbbf26a3…

MALICIOUS

PDF

48.8 KB Created: 2020-08-17 10:39:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 460719afccf439488dcacee86fdc769b SHA-1: 1bcc5c45253f0b084b085e968996ec2a8b44c69e SHA-256: 501293bdcbbf26a3f8d12e4da149e0d634bfd7660b1efac17969d3c2a3512a27
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 disguised as a search result for educational content. The document body, though heavily obfuscated, contains the same URL. The PDF also exhibits characteristics of a link farm, with numerous embedded links pointing to external resources, likely for SEO manipulation or to host further malicious content.

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=mcgraw+hill+education+sat+2017+answers In PDF document text
    • http://kovojexi.tessarushtonfit.com/uploads/1/3/0/7/130775350/743f3a781f409e.pdfIn PDF document text
    • http://dazujam.adorablepotatocreations.com/uploads/1/3/1/0/131070993/wuveluse.pdfIn PDF document text
    • http://files.hellotaiwan.us/uploads/1/3/1/1/131163782/fakoxumevaxebepeju.pdfIn PDF document text
    • http://bexevaka.warriorschnauzers.com/uploads/1/3/0/8/130874493/bodanelexijejudije.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/1/0431/2327/7973/files/kowikakov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1815/6192/files/business_complaint_letter_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7600/9632/files/tigijefebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3448/3616/files/6931262135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7492/6230/files/97130023865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32296476761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3393/5519/files/34065350739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/defap.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 2

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_off000077f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77F1 5704 bytes
SHA-256: ce441ec3d5bf93e5db4227864bbb2535907834502f8ee741eaf5cad6303e7956
font_01_sfnt_off00008b73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B73 13396 bytes
SHA-256: 13c7ff4fb7e38a1a13240116b4111ca4fa8beca25575de20dddb298d8c6de6ae

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