Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8f4360a44dc4dc6…

MALICIOUS

PDF

37.1 KB Created: 2020-08-21 00:24:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ad4fae419023f807d05d8eaba6ba879d SHA-1: e529ee36c15753c61c60b70771f3ed802dbcbca7 SHA-256: f8f4360a44dc4dc62981ee67eabd4762a6eb33c28cc27c202417f2a191c34f9f
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, likely to obscure the malicious destination. The ML classifier strongly indicates 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=bragg%2527+s+nutritional+yeast+nutritional+information In PDF document text
    • http://files.kmmcfarland.com/uploads/1/3/0/7/130775537/8672866.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/1/0435/4709/9290/files/48360019116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0571/2296/files/djpunjab_new_song_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3993/1033/files/50203010384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/joferonojidap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4981/8024/files/peximulosapumixupem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6124/7129/files/birewilowal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4339/6506/files/71999969268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/6248/0296/files/hobgoblin_race_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5276/0224/files/49069421922.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9592/4637/files/rovuxonorijakuf.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_off0000516d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x516D 5272 bytes
SHA-256: abe8e7554430382f3868c0c499d8998cef45aed0a7af4edba114cae5cf164cb2
font_01_sfnt_off00006357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6357 10660 bytes
SHA-256: c9096f3714f2233d9b528012b1b3084179a21cdb3b0139bdacf7b7ab27310e53

Open this report in the interactive analyzer, or submit your own file for analysis.