Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2c7c974d6b7ebf2…

MALICIOUS

PDF

37.6 KB Created: 2020-08-02 23:47:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8faed4f5f2c3a94dcd656dcfe890e87a SHA-1: 9c8092398c3bc3e31cd23fff92068b7a29db1c00 SHA-256: f2c7c974d6b7ebf2f23142406f79b24a2d8090571cafa9d6aaf84cabfada55ad
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.com/pify?keyword=divi+api+key', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The presence of numerous other PDF links, many hosted on Shopify, indicates an attempt to obscure the malicious destination and potentially leverage benign-looking domains for distribution.

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=divi+api+key
    • http://files.headlamhallgolf.com/uploads/1/3/1/3/131379801/zefisarerisafe.pdf
    • http://files.rocksolidskilltraining.com/uploads/1/3/0/7/130775714/robogutugaje-wosawokewowos.pdf
    • http://files.arbourtraceneighborsassociation.com/uploads/1/3/0/7/130738919/7473124.pdf
    • https://cdn.shopify.com/s/files/1/0431/3926/8774/files/wemunikuvisu.pdf
    • https://cdn.shopify.com/s/files/1/0437/0602/4101/files/ultimate_reset_program_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/5730/7039/files/sebekusizoba.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mowajuvide.pdf
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/dezozidewutovirofola.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6533/files/76558566315.pdf
    • https://cdn.shopify.com/s/files/1/0431/8530/7805/files/runoxakiviwone.pdf
    • https://cdn.shopify.com/s/files/1/0436/0939/1261/files/88754615422.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/76049434981.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/99886761485.pdf
    • https://cdn.shopify.com/s/files/1/0433/8860/0478/files/funaganiberijare.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_off000057f8.bin
1301b861be15ea02d93454d8e8490a3c347be64a97589e4b5c08e91f31d18fe3
pdf-font-stream PDF embedded font (sfnt) at offset 0x57F8 4732 bytes
font_01_sfnt_off0000683e.bin
0b1d52757908ab1164d316636306c0d68c4718f1aa6c5587e8dc58770956653f
pdf-font-stream PDF embedded font (sfnt) at offset 0x683E 9872 bytes