Malicious PDF — malware analysis report

Static analysis result for SHA-256 448b227e706cb523…

MALICIOUS

PDF

37.0 KB Created: 2020-08-14 17:08:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 573d8126c3c3ed46e285ba0cb3b11dd3 SHA-1: fcb06987c721c12d0342749b3b8c8a82f3559362 SHA-256: 448b227e706cb523b4775b405498799f7395e98cade8b719901f5f0d76a5fccb
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'soundtrack zip' file, which is likely a social engineering tactic to entice users to click the malicious link. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content widely.

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=fooly+cooly+soundtrack+zip
    • http://vizanedow.mariaevagorou.com/uploads/1/3/0/9/130968921/9575208e51793.pdf
    • http://files.goldencrownrealty.com/uploads/1/3/1/4/131438180/6c1e4b8b3.pdf
    • http://volokivu.daytonis.org/uploads/1/3/0/7/130738894/d13d3.pdf
    • http://files.abidingwordct.org/uploads/1/3/0/9/130969390/fb544debd5f4551.pdf
    • http://files.josephhouckmusic.com/uploads/1/3/1/4/131483830/6911527.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wixedazatujiguxup.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dokole.pdf
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/14550759222.pdf
    • https://cdn.shopify.com/s/files/1/0433/4754/2175/files/fumakafafemanibiju.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/jopofok.pdf
    • https://cdn.shopify.com/s/files/1/0431/7062/7735/files/cerebral_venous_thrombosis.pdf
    • https://cdn.shopify.com/s/files/1/0428/1086/7871/files/wibasaletoxemajizedu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5211/2804/files/22842349671.pdf
    • https://cdn.shopify.com/s/files/1/0433/0304/3230/files/kimifuvemixixuxoradatajuv.pdf
    • https://cdn.shopify.com/s/files/1/0438/5108/8034/files/kusisidefusodomewib.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_off00005320.bin
39c8844f34c4afc24b9a9c376d6734621df13348b266afff97af2ed9c6a8a44a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5320 5240 bytes
font_01_sfnt_off00006511.bin
eb38202563e6e76852edc9f2ed6a1e3187b8ce6c772130e9ccd0b2b8704e44f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6511 10084 bytes

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