Malicious PDF — malware analysis report

Static analysis result for SHA-256 a57468222c7cd86a…

MALICIOUS

PDF

44.3 KB Created: 2020-09-04 17:59:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 596fad604353630c57f9cad6377f5d76 SHA-1: 1a3329f0e893eaae3f8b7ef4806fbc4ff956fd7d SHA-256: a57468222c7cd86a996cd01bdff3beea4e6ab8a937b35e312b02cb40d465d294
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=italy+currency+information'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious redirector URL and a benign-looking PDF filename, suggesting a lure to a malicious 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.me/wix?keyword=italy+currency+information
    • https://cdn.shopify.com/s/files/1/0437/7408/3233/files/bosologonedug.pdf
    • https://cdn.shopify.com/s/files/1/0437/5203/0357/files/dofakavo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7360/9636/files/togofudezub.pdf
    • https://cdn.shopify.com/s/files/1/0436/4448/5790/files/catcher_in_the_rye_chapter_2.pdf
    • https://static.usrfiles.com/ugd/c57cae_be256707489d4280bb0c0c11203b7262.pdf
    • https://static.usrfiles.com/ugd/ec0c41_b90e125a501c4289b8711f079964b9ca.pdf
    • https://static.usrfiles.com/ugd/516793_799734c2d5cc4364bfc5d6d71d9934cc.pdf
    • https://static.usrfiles.com/ugd/9219f8_730b927638ba4c49af60a21beef73124.pdf
    • https://cdn.shopify.com/s/files/1/0434/7920/4006/files/bhojpuri_movie_video_full_hd.pdf
    • https://cdn.shopify.com/s/files/1/0433/7742/6584/files/cisco_nexus_9000_aci_configuration_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/2990/6079/files/vokopi.pdf
    • https://cdn.shopify.com/s/files/1/0435/8553/6159/files/wajenuwarinubi.pdf
    • https://static.usrfiles.com/ugd/15cd4d_13bb8131d7184d26a804847ab6f9373c.pdf
    • https://static.usrfiles.com/ugd/fdd6c2_f6c2b8d22e3a41e5a7d05e6947fe213d.pdf
    • https://static.usrfiles.com/ugd/d43733_c36c9885537a4c9d8ba1479adb7cff6f.pdf
    • https://static.usrfiles.com/ugd/f9fac6_754a59b883144b74bb2e56e8cd967225.pdf
    • https://static.usrfiles.com/ugd/6290de_98955622ac7648b09c846b683d2c76c0.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_off0000700d.bin
c538833f8a3cc5a7ef1ef26284fbd0a5d89f869bd1cc60287446ce54c963373b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x700D 4888 bytes
font_01_sfnt_off000080a2.bin
23f6685d57960942834c8ca2b9f76e71a5b61d21f63de690612d5d1822a36f0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80A2 10400 bytes

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