Malicious PDF — malware analysis report

Static analysis result for SHA-256 c93dc895869a9e8f…

MALICIOUS

PDF

40.8 KB Created: 2020-08-30 09:47:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ffc9634e5e88e73e4dfa5bcd2021dbf SHA-1: 95348cd5b1184f9774f2d4528e13c7c019835579 SHA-256: c93dc895869a9e8f164e1a4e63ee39798f81add554aa7b8094d08fe699359c03
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are SEO-optimized and point to benign documents. However, one critical heuristic firing indicates a link to a known malicious redirector, ttraff.cc, disguised as a 'mafia 3 strategy guide pdf'. This suggests the document is part of a link farm designed to funnel users to malicious sites, likely for phishing or malware distribution. No scripts were extracted from this sample.

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/wix?keyword=mafia+3+strategy+guide+pdf
    • https://static.usrfiles.com/ugd/760101_29419a645054457cb5ce0749ba09007d.pdf
    • https://static.usrfiles.com/ugd/b8c837_e83933a8ccff41bcb65acf3b89c9b470.pdf
    • https://static.usrfiles.com/ugd/b8c837_d36efc66e1ff4671935da6f60229f0b9.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/aphthous_ulcer_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/understanding_culture_society_and_politics_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/3545/1804/files/dallas_cowboys_injury_report_week_1.pdf
    • https://cdn.shopify.com/s/files/1/0436/2308/8290/files/daily_attendance_app_android.pdf
    • https://cdn.shopify.com/s/files/1/0431/3684/3933/files/jokaxuwopim.pdf
    • https://cdn.shopify.com/s/files/1/0429/5809/4495/files/finding_grammar_errors_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0429/2280/3366/files/mathematics_in_the_modern_world_philippines.pdf
    • https://static.usrfiles.com/ugd/6cf392_3f449df137e7435598320426567b9312.pdf
    • https://static.usrfiles.com/ugd/b52961_76799893058f4c228008b2169f3ae358.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_off00005ff9.bin
445efd1812c2e2b867da5829ce0150abc0097aa0c93512497d70841447e2f5e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF9 5448 bytes
font_01_sfnt_off0000729b.bin
83b221da6b86b7ecf8d0a5b47f9a54d124b07101fe54a91df4e2c77cdf24aaf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x729B 10652 bytes

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