Malicious PDF — malware analysis report

Static analysis result for SHA-256 504f9dec8e07b846…

MALICIOUS

PDF

67.3 KB Created: 2020-08-28 11:32:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 841c0ba39f17931f8bab52352f06d081 SHA-1: db94cd4ef40b9760e13771bab033e39910bd5b5d SHA-256: 504f9dec8e07b8463919059d53fb9055e6b167863853d0b5d500c7886c0f1e69
120 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, pointing to 'ttraff.ru'. This URL is embedded within the document body, suggesting an attempt to lure the user to a malicious site. The file also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The primary malicious URL is the most significant IOC.

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=proposition+subordonn%25C3%25A9e+conjonctive+compl%25C3%25A9ment+circonstanciel+de+temps
    • http://lovul.lotusranch-homes.com/uploads/1/3/1/4/131454215/savupuvesun-jorunazan-muwamanija.pdf
    • http://letakas.monkeesconcerts.com/uploads/1/3/1/4/131407995/fixifezu.pdf
    • https://cdn.shopify.com/s/files/1/0440/8446/1720/files/the_prophet_gibran.pdf
    • https://cdn.shopify.com/s/files/1/0431/3258/4098/files/twisted_fate_guide_mobafire.pdf
    • https://cdn.shopify.com/s/files/1/0434/3608/1308/files/canon_rebel_t3_manual_focus.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/a343f_automatic_transmission.pdf
    • https://cdn.shopify.com/s/files/1/0432/0693/4696/files/26736136394.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5502/files/80009085415.pdf
    • https://cdn.shopify.com/s/files/1/0431/0191/3244/files/82307880848.pdf
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/38483644213.pdf
    • https://cdn.shopify.com/s/files/1/0437/9967/5040/files/t-fal_raclette_grill_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0438/0046/1474/files/pasugibonunukiva.pdf
    • https://cdn.shopify.com/s/files/1/0428/2197/6220/files/diwugidewurux.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_off0000b424.bin
1c12cda363be7ad8e1de0422adb33000757bde67c73fb22c8fe186c5aab23214		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB424 5520 bytes
font_01_sfnt_off0000c682.bin
5f83008f5b1a2efa60580fe7440fe5b8c114f3a5457d7665e04199124a4dc181		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC682 12856 bytes
font_02_sfnt_off0000ee57.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE57 4324 bytes

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