Malicious PDF — malware analysis report

Static analysis result for SHA-256 2985a990a8af5b5c…

MALICIOUS

PDF

51.9 KB Created: 2020-08-20 18:56:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45f235e47d54cd447d9efe327a62cebf SHA-1: 3d3b7fcca21e8b9e7d535096b2e9d85a6e98ba4b SHA-256: 2985a990a8af5b5cb8f32a947f3370dc62bf9e4c1950fdf655768bf2b2509cab
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.ru. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to a 'Porsche Cayman used buying guide'. The presence of a link farm heuristic suggests this PDF is part of a larger campaign to distribute malicious content. The primary IOC is the redirector URL.

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.ru/pify?keyword=porsche+cayman+used+buying+guide
    • http://files.climbphilippines.com/uploads/1/3/2/6/132680908/dalogepore-tulapevawu-xisorok-bolufemufoz.pdf
    • http://files.troop115.com/uploads/1/3/0/7/130740298/pugemanife.pdf
    • https://cdn.shopify.com/s/files/1/0433/4986/8712/files/vepixovaporalodowilujojok.pdf
    • https://cdn.shopify.com/s/files/1/0429/8499/7025/files/fuminawutigagurew.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/33898030558.pdf
    • https://cdn.shopify.com/s/files/1/0433/4836/1375/files/vumekurezozesoriw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9118/2243/files/escape_from_tarkov._12_release_date.pdf
    • https://cdn.shopify.com/s/files/1/0441/0540/0472/files/bcia_8016_form_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0432/4176/7072/files/beautiful_life_ost_goblin_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0432/0234/7168/files/animal_farm_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/3415/7991/files/60789050271.pdf
    • https://cdn.shopify.com/s/files/1/0440/3075/4966/files/vejajukesajukidago.pdf
    • https://cdn.shopify.com/s/files/1/0430/0508/3811/files/osrs_f2p_ironman_guide.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_off00008c14.bin
08959b13d7896047e51c920fa25ce14d5ca8f116e3d81300fe50bc08dc06d3b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C14 5564 bytes
font_01_sfnt_off00009eda.bin
5e68bd3aad631d59742cf7bf129b1c8223c7cbdfe747cdf9456d3cdbcde9fad8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EDA 10488 bytes

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