Malicious PDF — malware analysis report

Static analysis result for SHA-256 d986015645343458…

MALICIOUS

PDF

44.7 KB Created: 2020-09-04 13:49:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00d2eb4e5f6ebd5cbf99bb8914fc1116 SHA-1: 56200e7e08bf6e484ff35fab236a4ee1dfa7000f SHA-256: d986015645343458321cc1baf015088381873b275247727acb57660824ed0fae
150 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its inclusion of a link farm containing numerous external PDF links. One of these links, https://ttraff.me/wix?keyword=aspart+novolog+davis+pdf, is flagged as a malicious redirector. The document body contains garbled text and embedded URLs, further supporting the malicious nature of the file. The primary attack pattern involves luring users to malicious infrastructure through a deceptive link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=aspart+novolog+davis+pdf
    • https://static.usrfiles.com/ugd/b8c837_e28f30ce82144481a06ca84e8cbf376e.pdf
    • https://static.usrfiles.com/ugd/ce77c6_35fdddbf91014a5c989c2dbe00be0a97.pdf
    • https://static.usrfiles.com/ugd/d7ba0f_8fb7e558ade74975a2a4dc4c7809e3a7.pdf
    • https://static.usrfiles.com/ugd/b8c837_8758fbd13a154e019d46c88081db4d8f.pdf
    • https://static.usrfiles.com/ugd/40512e_30346191479842f5a8ee9fd5f41d831c.pdf
    • https://static.usrfiles.com/ugd/b8c837_665cf2c14ae843bfb5d9ccd3087f63af.pdf
    • https://static.usrfiles.com/ugd/01bc73_02b4021efb1c45ef83e0c35fb3caee8a.pdf
    • https://static.usrfiles.com/ugd/6290de_f7bdea0806af4c2b923988f08c0715a0.pdf
    • https://static.usrfiles.com/ugd/3f80ec_93eb8fbf9f6340f387ca075c4bdea472.pdf
    • https://static.usrfiles.com/ugd/b8c837_1ff3186acd834b2e8529789e18225bd5.pdf
    • https://static.usrfiles.com/ugd/b8c837_87138a1d72a24928a626ab6d5ac58bec.pdf
    • https://static.usrfiles.com/ugd/2e79a6_ce9f3b8508764af9b69a2e0404b9a4d0.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064e0.bin
c1cb6af691af0637c31bf1e918549af81b495fa7bd0af682030aa35061d9e14b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64E0 4928 bytes
font_01_sfnt_off000075b0.bin
e2a79b0e655ba8c0a317af8b5709b300b6fce62b0469994fdab533ae74e6b95f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75B0 10164 bytes
font_02_sfnt_off00009832.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9832 4324 bytes

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