Malicious PDF — malware analysis report

Static analysis result for SHA-256 907fbc5eac661a16…

MALICIOUS

PDF

43.9 KB Created: 2020-07-31 01:23:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0a20372edaa0795b1e0c5214125790b2 SHA-1: a36d5ae9bfc4cb7d66be18efb8e61d0afa1c0eb3 SHA-256: 907fbc5eac661a163347e31e0753473c509d27d60c086a4c137e9ec24f5a6293
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector pointing to 'ttraff.cc'. The document body is heavily obfuscated, but the presence of a malicious redirector and a link farm suggests an attempt to lure users to malicious sites. 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.cc/pify?keyword=probability+and+statistics+1+pdf In PDF document text
    • http://files.drjoybozzo.com/uploads/1/3/1/6/131606360/dc77d091183c0e6.pdfIn PDF document text
    • http://files.nanapafarms.com/uploads/1/3/1/4/131483391/loloki.pdfIn PDF document text
    • http://files.jaipurelephantpolo.com/uploads/1/3/0/8/130874371/jimepanozez-mikabipotojepox-jatuxar-temegup.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/1/0434/6927/5286/files/parixufufoxabenavebabozul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3584/5017/files/taloneseduxopos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9105/0137/files/gogeloperabezopomik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekosipavejidowusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/32999829062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9691/5616/files/zivuxasovabuverem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4323/2661/files/90395453424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9140/2660/files/92412606360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2885/6477/files/kaxikun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1325/0972/files/zujelurugaguva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2072/2080/files/memobosivod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9048/5150/files/47923605364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9391/6837/files/zijegisupazepojev.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 3

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_off00006f6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6F 5116 bytes
SHA-256: f3e07de04c9d313e0575c2845940632c83573363d160b6bf80f01bc22e2cb5b7
font_01_sfnt_off000080d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D2 9872 bytes
SHA-256: 4ea617a925c6e3c33ccd4a400782208bb27f7469560808c10ba5b6d0c88a467e

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