Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ea86afcdeb87d75…

MALICIOUS

PDF

49.7 KB Created: 2020-08-23 16:45:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b376658d3f1c303df8f58f1750499844 SHA-1: fd27368d1fdc5ec0a2e30d8b970b35962c828f77 SHA-256: 2ea86afcdeb87d75f154ba39097127071ad396cde087fa303f8a4d3b0188b0c6
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=crysis+3+pcz'. This URL is likely used to redirect the user to a malicious site. The document body also contains this URL and numerous other links to PDF files hosted on Shopify, suggesting a link farm or redirection tactic. The ML classifier also flagged this PDF with high confidence.

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=crysis+3+pcz
    • http://files.markterlesky.com/uploads/1/3/0/7/130738607/kiwevavakuki_zamonetodasofat.pdf
    • http://files.thefishchurch.com/uploads/1/3/1/8/131871721/a9c24d3.pdf
    • http://files.pachecoathletics.com/uploads/1/3/1/6/131636941/tikazadesomo.pdf
    • http://files.comchart.com/uploads/1/3/1/0/131070485/9396121.pdf
    • https://cdn.shopify.com/s/files/1/0437/8283/2280/files/marlon_brando_songs_my_mother_taught_me.pdf
    • https://cdn.shopify.com/s/files/1/0430/9988/1639/files/econometric_analysis_greene.pdf
    • https://cdn.shopify.com/s/files/1/0433/7798/3651/files/1943497513.pdf
    • https://cdn.shopify.com/s/files/1/0428/5513/7447/files/xukigegozofo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5475/9065/files/99329363620.pdf
    • https://cdn.shopify.com/s/files/1/0435/9513/7187/files/37286800291.pdf
    • https://cdn.shopify.com/s/files/1/0437/7529/5640/files/fupurosolimipawat.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066ac.bin
8cda523dceb24491046f05f06a860790e5c6e1a3e99c5952b040178d5b5b3b95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66AC 4908 bytes
font_01_sfnt_off0000777b.bin
d5fdf9f96e7405837dd327253142c81488109c6dee700589238f686f387df91e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x777B 14576 bytes
font_02_sfnt_off0000a548.bin
57c520df3940096537ea9d20104d747090873546fcd09b3bf0802d43476a62bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA548 16128 bytes

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