Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf8c9f4f7615634b…

MALICIOUS

PDF

43.7 KB Created: 2020-09-20 03:59:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74dd8ba95ba917e7334fd386f69fe42c SHA-1: 93e49997030899cb88129ca232bb6b8b79e84dcf SHA-256: cf8c9f4f7615634b5094ee5bdb379505a63a9faf5050d0de43cfb97d0f853616
140 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous embedded URLs, including a critical redirector link to 'ttraff.me'. The document body, though heavily obfuscated, contains references to the same malicious URL and benign-looking PDF links, suggesting a lure to a malicious site. The presence of a callback phishing lure heuristic further supports the social engineering aspect of this attack. No scripts were extracted from this sample.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.me/wix?keyword=gospel+events+2020
    • https://bc9251c6-aabd-464d-9f4c-57941cb754fb.filesusr.com/ugd/0c60a0_46898738a537483faefc0781ea72d560.pdf?index=true
    • https://2222bf36-214d-490e-915f-dbbb2de97791.filesusr.com/ugd/d4da64_3ed774e84991427abe6787ef26c075f4.pdf?index=true
    • https://df0e7dfe-3b64-4f7a-b385-46778fb67606.filesusr.com/ugd/f3ecbe_e6f0934ce61d4b3db748eadb690aa911.pdf?index=true
    • https://6183e866-9fa6-4408-8a13-042e12f817ff.filesusr.com/ugd/f2ef67_71f12619b476440f838123b76fc646c9.pdf?index=true
    • https://ad898f79-3570-416f-9fa5-a79f85972079.filesusr.com/ugd/9ea9b6_3bd70342061a4bdfb06f43b4bc69737e.pdf?index=true
    • https://27e8a8ee-5bc6-4841-8c89-9fd7a64de7a1.filesusr.com/ugd/275374_bcb34833cc674af188d18b3c7768adb8.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0429/8987/9445/files/best_bp_cuff_manual.pdf
    • https://cdn.shopify.com/s/files/1/0440/2741/2645/files/bmw_certificate_of_conformity_for_france.pdf
    • https://cdn.shopify.com/s/files/1/0434/0508/2780/files/release_jewel_mhw.pdf
    • https://cdn.shopify.com/s/files/1/0428/3249/4751/files/95677915746.pdf
    • https://cdn.shopify.com/s/files/1/0436/0096/9896/files/20312585639.pdf
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/19741497333.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_off00005f50.bin
81749808d973c3538f745168f61ff3a58cbb53acabcacf267787a22c3a17e867
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F50 4612 bytes
font_01_sfnt_off00006f21.bin
b988c7578e70d19d615b14704383b8792b64583630d042de34b2f21ee82641ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F21 10960 bytes
font_02_sfnt_off00009467.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x9467 4324 bytes