Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c7eceaacd31b2fb…

MALICIOUS

PDF

41.7 KB Created: 2020-08-21 14:10:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fea83c4daec7a6d20a37484eb45d2bae SHA-1: a3d12a0fd462265d7b3758dde6f34d64e30f5710 SHA-256: 8c7eceaacd31b2fb7e106a9901cb2f90d92586f43630c4b719f683f96c06cba0
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=springing+power+of+attorney+california+form'. Additionally, it exhibits characteristics of a link farm, embedding numerous external PDF links, with the primary one being 'https://cdn.shopify.com/s/files/1/0429/6966/1589/files/56858918996.pdf'. The document body, though heavily obfuscated, appears to contain the same malicious URL, suggesting a lure to a phishing or malware distribution site.

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.ru/pify?keyword=springing+power+of+attorney+california+form
    • http://files.turningheadsdesign.com/uploads/1/3/1/4/131411596/gutipajefu.pdf
    • http://gejilubuv.fredpahlke.com/uploads/1/3/1/1/131164243/tuvimazu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/56858918996.pdf
    • https://cdn.shopify.com/s/files/1/0432/7371/5880/files/xetawobokejopubiradugibu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3595/1257/files/muzawuwizolovipunaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/6921/0773/files/wuzisezasafofaxadigadu.pdf
    • https://cdn.shopify.com/s/files/1/0429/4452/8550/files/fonatufoxawinawonipamigis.pdf
    • https://cdn.shopify.com/s/files/1/0432/3278/8648/files/tosijajunuf.pdf
    • https://cdn.shopify.com/s/files/1/0429/8119/5927/files/apush_chapter_6-_8_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3979/files/17108338532.pdf
    • https://cdn.shopify.com/s/files/1/0440/0958/6846/files/bidofinunowadumav.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/digalikerewuxajevukadud.pdf
    • https://cdn.shopify.com/s/files/1/0433/9888/9635/files/64214369773.pdf
    • https://cdn.shopify.com/s/files/1/0428/5654/6467/files/66331807975.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_off00006581.bin
3da334b7e1a4b2b12115b03981cab52650d2d1a2963a3ec0504faca5c29aebde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6581 5456 bytes
font_01_sfnt_off00007815.bin
f5afd3e3b637488b91f74c9eafb7806bc1df55ae7fa159f8e0aacbdca1a6e7d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7815 9964 bytes

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