Malicious PDF — malware analysis report

Static analysis result for SHA-256 36f8ba930937fa8e…

MALICIOUS

PDF

38.4 KB Created: 2020-08-22 16:59:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 746378f9bef4a668442ff025b84f4a14 SHA-1: 1238a6a2efcdfd21e80f99390cc00fb5ab595f78 SHA-256: 36f8ba930937fa8ed9d4e597f4d5e664d56f449e1385353deb2641c120880d51
120 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=agricultural+research+pdf'. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and appears to be a lure related to 'agricultural research'. The primary intent is to redirect the user to malicious infrastructure.

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=agricultural+research+pdf
    • http://files.stephen-acabado.com/uploads/1/3/0/9/130969241/bimezu_bemunepoxena_mizira.pdf
    • http://rodura.1carter.net/uploads/1/3/0/9/130969465/e683ebe68f.pdf
    • http://files.cvubaseball.com/uploads/1/3/1/3/131380687/3508699.pdf
    • https://cdn.shopify.com/s/files/1/0434/0337/8839/files/rejoxituxikogezulebavewiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/8778/2297/files/8975915556.pdf
    • https://cdn.shopify.com/s/files/1/0432/0018/4477/files/drivers_brother_dcp-_t500w.pdf
    • https://cdn.shopify.com/s/files/1/0429/8060/6111/files/centrifugal_pump_design_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7330/files/pizegisazuzukavebukopi.pdf
    • https://cdn.shopify.com/s/files/1/0434/9440/8357/files/41900411308.pdf
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/dusaxipotofod.pdf
    • https://cdn.shopify.com/s/files/1/0436/1833/6925/files/adventure_of_a_lifetime_hd_video.pdf
    • https://cdn.shopify.com/s/files/1/0427/5663/6828/files/kerufev.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_off00004c2a.bin
41e900b23f9e9e8d2d7573c46809ac996f897aacb04ee9f6c39e903b634113a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C2A 5072 bytes
font_01_sfnt_off00005d7f.bin
07353eb1a3a3c51ea9d132bb96371e2033f56887cdfbd54e141369dd21da2e14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7F 9868 bytes
font_02_sfnt_off00007f40.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F40 4324 bytes

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