Malicious PDF — malware analysis report

Static analysis result for SHA-256 faf5e7c27ecceb21…

MALICIOUS

PDF

40.3 KB Created: 2020-08-30 20:59:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef31892198ba0c2c5fc390b609559849 SHA-1: af4e961b39310047de3c5257c578d197cb66b6b9 SHA-256: faf5e7c27ecceb21172e2957dfe24feea9d8b61ff85311727120a5b39027e1de
130 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.ru/wix?keyword=how+to+download+games+on+psp+without'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, including one to 'https://cdn.shopify.com/s/files/1/0434/4774/6716/files/alkyne_reactions_summary.pdf'. The document body, though heavily obfuscated, contains references to these URLs and a call-to-action phrase, suggesting a social engineering attempt to trick users into clicking malicious links.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=how+to+download+games+on+psp+without
    • https://cdn.shopify.com/s/files/1/0434/4774/6716/files/alkyne_reactions_summary.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8951/files/sobamoso.pdf
    • https://cdn.shopify.com/s/files/1/0438/0770/3201/files/56421400931.pdf
    • https://static.usrfiles.com/ugd/b8c837_0c3d0bad0d4745d3b7fd4adb5f95d623.pdf
    • https://static.usrfiles.com/ugd/b8c837_580575a57c014bba9314d1ad3098713d.pdf
    • https://static.usrfiles.com/ugd/b8c837_cd212668f901423aa76b47aee390d3c3.pdf
    • https://static.usrfiles.com/ugd/0c41e7_e020958c829b427ebe4d01b44b2da784.pdf
    • https://static.usrfiles.com/ugd/90423f_8acdd0eb7fd842e4ba9b58b8bd9caade.pdf
    • https://static.usrfiles.com/ugd/b8c837_b92fa0b6174c46968c8cddc0ad240f12.pdf
    • https://static.usrfiles.com/ugd/b7ed05_02b2019c50db42799a40de13f2a16645.pdf
    • https://static.usrfiles.com/ugd/fb5067_a7940be404e04111a19e7411cf24ba50.pdf
    • https://static.usrfiles.com/ugd/455f95_7c735f8025dc4a5380a33c93dc49ba89.pdf
    • https://static.usrfiles.com/ugd/33a2e4_ebd6cc1b577741b08370a0f2fe6d5665.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_off00005fcd.bin
09f0b7d53a87eacea5132b71eef4451035c2d9b4157d72ec3173141bccaf0fe0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCD 5328 bytes
font_01_sfnt_off000071d7.bin
0702ceb588e63b3dadea73c02ab3142d8f474565f0050488ce01bca339e9c31e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71D7 10340 bytes

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