Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3bfcbb671666bd0…

MALICIOUS

PDF

42.1 KB Created: 2020-08-08 01:01:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 633ced83b9623b88498665c41f9ca088 SHA-1: abc81e65ae01d074d733bc42106d08d0a7afc587 SHA-256: d3bfcbb671666bd0c3a0345837c925471b57ff7d0d609a5c85fd836c85c9051b
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a book title and the URL for the malicious redirector, suggesting a lure to a phishing or malware distribution site. The presence of a link farm further indicates malicious intent to distribute or redirect traffic.

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.cc/pify?keyword=bastard+out+of+carolina+full+book+pdf
    • http://files.agdersymfoniorkester.com/uploads/1/3/0/9/130969874/e1fd89d.pdf
    • http://files.villacasaolas.com/uploads/1/3/1/3/131398143/ab59eb.pdf
    • http://files.ricotroostphotography.com/uploads/1/3/0/7/130775361/352127.pdf
    • http://files.marcscabs.com/uploads/1/3/0/9/130969211/fananopeli.pdf
    • https://cdn.shopify.com/s/files/1/0433/8499/5991/files/shoprite_bursary_2020.pdf
    • https://cdn.shopify.com/s/files/1/0436/6116/4697/files/72213360338.pdf
    • https://cdn.shopify.com/s/files/1/0428/5890/5759/files/nafijajunigat.pdf
    • https://cdn.shopify.com/s/files/1/0430/4414/3253/files/road_conditions_i_5_siskiyou_pass.pdf
    • https://cdn.shopify.com/s/files/1/0437/1863/9765/files/nys_drivers_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/9109/1875/files/55130979069.pdf
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/70857261686.pdf
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/66270621725.pdf
    • https://cdn.shopify.com/s/files/1/0433/5337/4874/files/96815850908.pdf
    • https://cdn.shopify.com/s/files/1/0432/6785/0390/files/42712994358.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/8274340339.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_off00006733.bin
ec1bcfd6c025e294c81ff9f967b36cd46f756cd1cea28b714dcd74813896fe25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6733 5404 bytes
font_01_sfnt_off0000799e.bin
e3a104d407543722c20a77949ecf71ac981c68c6622c234e2640d83ad72537ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x799E 9860 bytes

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