Malicious PDF — malware analysis report

Static analysis result for SHA-256 52d0ba1807dba1a5…

MALICIOUS

PDF

48.7 KB Created: 2020-08-06 23:32:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ca6e48e3b7cf6ff1ed2480b4272caa6c SHA-1: 68812b373516f8a02ea5384a82057f3c3d768b16 SHA-256: 52d0ba1807dba1a51a849a3527c963752761324a924e915a81d1bb7d286b42d5
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains this URL and appears to be a lure for a 'Canon 600d manual pdf español'. Another critical heuristic indicates a PDF link farm, with the primary domain being 'cdn.shopify.com'. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports the lure-based attack pattern. The primary malicious IOC is the redirector URL, which likely leads to a further stage of the attack.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=canon+600d+manual+pdf+espa%25C3%25B1ol
    • http://files.polarseeds.org/uploads/1/3/1/6/131606822/gokulaxurujezeredila.pdf
    • http://files.coachtoexpectsuccess.com/uploads/1/3/1/4/131406211/fegesesuti-livobafibef-bisabutogoditug-sijakanod.pdf
    • http://befuf.alexandrabischoff.com/uploads/1/3/0/8/130813612/3884850.pdf
    • https://cdn.shopify.com/s/files/1/0429/1638/0831/files/notalugubajufejodeniti.pdf
    • https://cdn.shopify.com/s/files/1/0430/2074/6906/files/zebusukasujuvugefapepo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8572/5850/files/mokewedusibakezelow.pdf
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/63582946693.pdf
    • https://cdn.shopify.com/s/files/1/0430/7573/1616/files/keboseworidafime.pdf
    • https://cdn.shopify.com/s/files/1/0431/7147/9713/files/zewenobisibovukixiwome.pdf
    • https://cdn.shopify.com/s/files/1/0431/2029/6090/files/55416377781.pdf
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/57193809634.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/70683779.pdf
    • https://cdn.shopify.com/s/files/1/0429/2640/7843/files/2891797539.pdf
    • https://cdn.shopify.com/s/files/1/0431/9064/8996/files/monaregunaxipopivalurebin.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_off00006fd5.bin
73e12937374ff63cb8bd21c982668ba7a66161a11fdd9acbda4c95b3975ae5cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD5 5376 bytes
font_01_sfnt_off000081c2.bin
3083e713c7713fec52410ef7ec15bda8c80c41bcaaff56aa60e0d308f610c2c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x81C2 10544 bytes
font_02_sfnt_off0000a572.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xA572 4324 bytes