Malicious PDF — malware analysis report

Static analysis result for SHA-256 db8c734fc72e018e…

MALICIOUS

PDF

42.8 KB Created: 2020-08-30 02:33:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ac4eecb7c34a8e5ed09e2168646bcd3 SHA-1: 5b5c10a957e1f8047d9b233433cf698b6b16925e SHA-256: db8c734fc72e018e6fd497682ac84171b26578cc55c39394741b7d06db787b13
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/wix?keyword=2006+honda+civic+manual+transmission+rebuild+kit`. Additionally, another critical heuristic indicates a PDF link farm, with numerous external links, including `https://static.usrfiles.com/ugd/834936_671e0cff2ef047baafb46c2cc452d353.pdf`. The document body, though heavily obfuscated, contains text related to a '2006 honda civic manual transmission rebuild kit', suggesting a lure to entice clicks on the embedded malicious link.

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=2006+honda+civic+manual+transmission+rebuild+kit
    • https://static.usrfiles.com/ugd/834936_671e0cff2ef047baafb46c2cc452d353.pdf
    • https://static.usrfiles.com/ugd/32acb1_f5a2cc69ea224ac183ef406d20bcde7d.pdf
    • https://static.usrfiles.com/ugd/e2c250_4756461fc66b47fe9013c2ed45a1af7d.pdf
    • https://static.usrfiles.com/ugd/3e87bf_dfd872aa69384d2a8df954613f5d7918.pdf
    • https://static.usrfiles.com/ugd/f8de3e_11ace995d1b84f018819cd6ce1510929.pdf
    • https://cdn.shopify.com/s/files/1/0435/3038/7607/files/difference_between_vedic_and_buddhist_system_of_education.pdf
    • https://cdn.shopify.com/s/files/1/0430/6593/3985/files/2017_ford_escape_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/6825/8469/files/livujepogiwipebad.pdf
    • https://static.usrfiles.com/ugd/e3c460_e438dd4faae04e27b6379fcb8032b818.pdf
    • https://static.usrfiles.com/ugd/b8c837_4d2c3bb36f12404e811aa3ac48835d09.pdf
    • https://static.usrfiles.com/ugd/b8c837_de3c9db0f874497da0122ed0da29be62.pdf
    • https://static.usrfiles.com/ugd/ce14f3_e128f845a5304e52a37e67d4c4e4c556.pdf
    • https://static.usrfiles.com/ugd/ce14f3_055386793bf54433b64da5b26b53a1af.pdf
    • https://static.usrfiles.com/ugd/b8c837_a14da25cc78048a3a60dba82ab30c952.pdf
    • https://static.usrfiles.com/ugd/ade4e6_a5ef5b58582d4ea59f58753099eadeb6.pdf
    • https://static.usrfiles.com/ugd/b8c837_8b7f2b0c200b401ea62610955f037079.pdf
    • https://static.usrfiles.com/ugd/b8c837_31acf244f30c48d9ba84016a7ceea100.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_off000067cc.bin
591319a03e0b2ab2b2058012c20dd2e4d33dd89c9c639741540767e046fd19bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x67CC 5776 bytes
font_01_sfnt_off00007b34.bin
126932b8170d3a06e7620e9185d967cba6a57aa034670099cfd810c17c650793
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B34 10164 bytes