Malicious PDF — malware analysis report

Static analysis result for SHA-256 de89ab344c40e8bc…

MALICIOUS

PDF

44.0 KB Created: 2020-08-13 22:32:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f7898ac9a546ff46d94dc67b6afa0fa0 SHA-1: 08f9e20ea1221b9f027f7bf6cf96497788707490 SHA-256: de89ab344c40e8bc376bf65b5ba7724a01fef4eedb1b0bb89de140e9b3b5d6df
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO poisoning. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is part of an advance-fee scam lure. The document body, though heavily obfuscated, contains the URL that leads to the redirector, indicating the primary attack vector is luring the user to click the link. The presence of numerous PDF links and the advance-fee scam lure strongly suggest a phishing or social engineering campaign.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=final+cut+pro+x+templates
    • http://rozanera.jamesportcigarco.com/uploads/1/3/1/3/131398591/mukukufajogi.pdf
    • http://files.e-learningo6u.com/uploads/1/3/1/4/131407469/5009806.pdf
    • http://files.krabidream.com/uploads/1/3/2/6/132681566/3285554.pdf
    • http://paxaxar.kanturkbns.com/uploads/1/3/1/4/131408024/75cfddbe0a2ca3.pdf
    • https://cdn.shopify.com/s/files/1/0430/9581/8397/files/13090440902.pdf
    • https://cdn.shopify.com/s/files/1/0434/6095/2229/files/sejazaku.pdf
    • https://cdn.shopify.com/s/files/1/0433/8191/5798/files/vopafapu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1024/5279/files/wukir.pdf
    • https://cdn.shopify.com/s/files/1/0433/5511/1589/files/bisifubotabuko.pdf
    • https://cdn.shopify.com/s/files/1/0431/7646/0448/files/fovebotevatisudilaliwofi.pdf
    • https://cdn.shopify.com/s/files/1/0435/5152/2977/files/90398248062.pdf
    • https://cdn.shopify.com/s/files/1/0436/3422/9398/files/pulojusaxigijala.pdf
    • https://cdn.shopify.com/s/files/1/0428/7424/1187/files/64265549928.pdf
    • https://cdn.shopify.com/s/files/1/0428/6706/4991/files/26666273925.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/brayton_cycle_problems_and_solutions.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_off00006f7f.bin
0e46d261732481a63755dfa171028e1cccb25911a9158efab0c7ee636ce4ff5b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7F 5104 bytes
font_01_sfnt_off000080bf.bin
600af6fbd1e703a9ccda8ba0257127480d776f1eaa8cb442ea0f556a99b43eb9
pdf-font-stream PDF embedded font (sfnt) at offset 0x80BF 10244 bytes