Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f3a394cc140eaf0…

MALICIOUS

PDF

32.8 KB Created: 2020-08-24 13:43:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07d95437388ec56b26290c698f9427bc SHA-1: 93badf9164174ed99dfd1c190bd69ca75d35b654 SHA-256: 2f3a394cc140eaf0ab58154677dbbaa4af180035a2acb9426a0aeac95110899b
128 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, forming a link farm. One critical heuristic indicates a PDF redirector link to 'ttraff.cc', which is known malicious infrastructure. The document body contains a lure related to a 'Dewalt flexvolt circular saw guide rail' and urgency language, suggesting a phishing or scam attempt. The primary malicious IOC is the redirector URL.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=dewalt+flexvolt+circular+saw+guide+rail
    • http://files.fivelakescabinetry.com/uploads/1/3/1/3/131380345/texetibula_joreta_pamuwe.pdf
    • https://cdn.shopify.com/s/files/1/0428/2246/7750/files/kopuvikerozuti.pdf
    • https://cdn.shopify.com/s/files/1/0434/8539/7152/files/loluna.pdf
    • https://cdn.shopify.com/s/files/1/0427/8000/0422/files/50255733256.pdf
    • https://cdn.shopify.com/s/files/1/0428/9485/2252/files/world_of_dance_school_performance.pdf
    • https://cdn.shopify.com/s/files/1/0431/6659/7288/files/moreletopigurafomumas.pdf
    • https://cdn.shopify.com/s/files/1/0447/2376/5402/files/14399856593.pdf
    • https://cdn.shopify.com/s/files/1/0430/0413/3525/files/12613713734.pdf
    • https://cdn.shopify.com/s/files/1/0437/7283/8039/files/99666613223.pdf
    • https://cdn.shopify.com/s/files/1/0429/0910/6335/files/30529647499.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_off000042a9.bin
68041b85b13ae01e5e9f40808c3f2b5aecc0e2837386929fcbf552d0bfbf8ed2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42A9 5408 bytes
font_01_sfnt_off0000553b.bin
6dc11a5819946a02398e33810cf401d86f7798d0e6958d6bec95519a1c808a87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x553B 9832 bytes

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