Malicious PDF — malware analysis report

Static analysis result for SHA-256 f74795c16e29dde8…

MALICIOUS

PDF

71.0 KB Created: 2020-08-22 13:04:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 295a44a6a38d215d5639c7c29a183b4e SHA-1: ece013e25f894b541f52eb63db79cc4fc739b215 SHA-256: f74795c16e29dde8e3bbbf42b7789e53638056b5948c80791c048ac8c775a32c
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a search result for 'black widow english song'. This link, https://ttraff.com/pify?keyword=black+widow+english+song, is designed to lead users to further malicious content. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDFs, likely for SEO manipulation or to host additional payloads. The ML classifier 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.com/pify?keyword=black+widow+english+song In PDF document text
    • http://malog.lesherinstrumentalmusic.com/uploads/1/3/1/4/131438304/wafaladorawebafoluzu.pdfIn PDF document text
    • http://vedef.nortonparkproperty.co.uk/uploads/1/3/0/7/130740387/aa3b3525e3.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/1/0432/9458/9094/files/16090680467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/1712/5270/files/40834785466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0889/1807/files/balimevaravejoboxex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6310/5953/files/prison_break_episodes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8669/1998/files/xuzapaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1320/9246/files/15326689286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0427/8422/files/32999948639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8462/7616/files/25434519548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8638/1210/files/34951811463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3798/2869/files/7687250010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/tamenelevogekonevezu.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_off0000cb0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB0A 5308 bytes
SHA-256: 79a330b165c1621804ef2dd85785141a5fb637170861ffcafe65da70019e8141
font_01_sfnt_off0000dd25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD25 16024 bytes
SHA-256: bf14f3e48135481839eca39ebe463f9889fe0cc3470907b67d2e24ef4e804df0

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