Malicious PDF — malware analysis report

Static analysis result for SHA-256 c90359500ea6220a…

MALICIOUS

PDF

40.7 KB Created: 2020-09-05 23:51:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6cbe91f4862c4971b25f3c656b225012 SHA-1: f3373e6055cc5bed4afe87e502be0e3ea528406a SHA-256: c90359500ea6220a6a53166af09ace22d91dd6e8bb50c447e5012fd57840c33a
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, with one prominent link pointing to a redirector. The document body, though partially corrupted, contains text related to a 'Bluetooth driver installer' and the malicious redirector URL. This suggests a social engineering tactic to trick users into downloading malware disguised as a legitimate driver installer.

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.club/wix?keyword=bluetooth+driver+installer+free++64+bit
    • https://static.usrfiles.com/ugd/9dda13_a01a70969a27405ea581368a69ea4a80.pdf
    • https://static.usrfiles.com/ugd/3649d2_5918b387d3264966be176000ea5f747d.pdf
    • https://static.usrfiles.com/ugd/361f4b_003958fb98324224bcd48bbcc0e7384e.pdf
    • https://static.usrfiles.com/ugd/a2e20a_e69cbb9d72ac4bfc86d46cc7a41bbb5a.pdf
    • https://static.usrfiles.com/ugd/4117a9_8b74117f37bf43f598895538e3f2b873.pdf
    • https://static.usrfiles.com/ugd/86319b_ea66537e1e8640b78d6a3ecf5abb6a77.pdf
    • https://static.usrfiles.com/ugd/b8c837_0a4efbfdb90b458abc7854d09df9785c.pdf
    • https://cdn.shopify.com/s/files/1/0438/7880/9755/files/14204645319.pdf
    • https://cdn.shopify.com/s/files/1/0437/3735/0293/files/55707101487.pdf
    • https://cdn.shopify.com/s/files/1/0438/8149/6744/files/human_anatomy_and_physiology_eighth_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/pepititaxadugag.pdf
    • https://cdn.shopify.com/s/files/1/0432/1637/1867/files/dujimubuwufiruvijanako.pdf
    • https://cdn.shopify.com/s/files/1/0437/0602/4090/files/katogik.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_off00005edb.bin
e271235d19249b6d2a61f6b965477fb1c5146138e91a6f0080187a4410fab86d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EDB 5484 bytes
font_01_sfnt_off00007185.bin
523a34b528ed4e04036a864e2974ba0a3f0397f27159a7368b9d9057bd6bd6cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7185 10656 bytes

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