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)
MD5: ad4fae419023f807d05d8eaba6ba879d SHA-1: e529ee36c15753c61c60b70771f3ed802dbcbca7 SHA-256: f8f4360a44dc4dc62981ee67eabd4762a6eb33c28cc27c202417f2a191c34f9f
150 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 3

  • 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.
  • 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
    • http://files.kmmcfarland.com/uploads/1/3/0/7/130775537/8672866.pdf
    • https://cdn.shopify.com/s/files/1/0435/4709/9290/files/48360019116.pdf
    • https://cdn.shopify.com/s/files/1/0439/0571/2296/files/djpunjab_new_song_2017.pdf
    • https://cdn.shopify.com/s/files/1/0436/3993/1033/files/50203010384.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/joferonojidap.pdf
    • https://cdn.shopify.com/s/files/1/0439/4981/8024/files/peximulosapumixupem.pdf
    • https://cdn.shopify.com/s/files/1/0434/6124/7129/files/birewilowal.pdf
    • https://cdn.shopify.com/s/files/1/0435/4339/6506/files/71999969268.pdf
    • https://cdn.shopify.com/s/files/1/0449/6248/0296/files/hobgoblin_race_5e.pdf
    • https://cdn.shopify.com/s/files/1/0434/5276/0224/files/49069421922.pdf
    • https://cdn.shopify.com/s/files/1/0431/9592/4637/files/rovuxonorijakuf.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000516d.bin
abe8e7554430382f3868c0c499d8998cef45aed0a7af4edba114cae5cf164cb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x516D 5272 bytes
font_01_sfnt_off00006357.bin
c9096f3714f2233d9b528012b1b3084179a21cdb3b0139bdacf7b7ab27310e53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6357 10660 bytes

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