Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c57c6f48d0e0009…

MALICIOUS

PDF

48.6 KB Created: 2020-08-29 03:44:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64cf648961d34a30fdbb563bcee09a43 SHA-1: e46c20ea85c9259c01dbadf80d63996d112b29bf SHA-256: 9c57c6f48d0e000924a654158ecdb2ba9830e7ecf2565b474b82de6b6ac38543
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One of the primary links, 'https://ttraff.ru/wix?keyword=teen+life+in+the+1950s', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the document's purpose is to drive traffic to this malicious domain. The presence of multiple links to 'static.usrfiles.com' indicates a link farm strategy.

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.ru/wix?keyword=teen+life+in+the+1950s
    • https://static.usrfiles.com/ugd/b8c837_e71686ae0bf54d148562e98766d6f469.pdf
    • https://static.usrfiles.com/ugd/b8c837_9739dc1acc38414c9df0e5c4031d5b43.pdf
    • https://static.usrfiles.com/ugd/b8c837_622fb092c81a4dcaa75e32c6b5e78e1a.pdf
    • https://static.usrfiles.com/ugd/b8c837_77f99552bd324721b20f93e892f0c36b.pdf
    • https://static.usrfiles.com/ugd/b8c837_7f36de8e2b6b4f6bb459464df10e6c40.pdf
    • https://static.usrfiles.com/ugd/b8c837_520695429b8040a68507a86bffe1995b.pdf
    • https://static.usrfiles.com/ugd/b8c837_7fb9aedc51804b0da9bd5ac73ec33ef4.pdf
    • https://static.usrfiles.com/ugd/b8c837_2229764c12d54c46a3608358a2e1f340.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/dragonscale_leatherworking_vanilla_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/6925/1487/files/war_horse_comprehension_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/8276/6750/files/zojipomasipawixejoxet.pdf
    • https://cdn.shopify.com/s/files/1/0434/5190/8249/files/grant_hill_net_worth.pdf
    • https://cdn.shopify.com/s/files/1/0437/8315/9970/files/58504446404.pdf
    • https://cdn.shopify.com/s/files/1/0435/1341/3786/files/block_craft_world_mod_apk.pdf
    • https://cdn.shopify.com/s/files/1/0430/3516/4835/files/24233370809.pdf
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/nds_pokemon_rom_hacks.pdf
    • https://cdn.shopify.com/s/files/1/0439/0918/5688/files/vuwipokuvilol.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_off00007478.bin
0a29b44ee7e8e5ca4dd96b5cdcb8e9f6d1180e373a0f4ca5c097376429694614
pdf-font-stream PDF embedded font (sfnt) at offset 0x7478 4648 bytes
font_01_sfnt_off00008443.bin
6b55f5b80eb0ed56556bb7c97e42ddf440fd08f33fdb9bc95bf9ebdb2c5fc56b
pdf-font-stream PDF embedded font (sfnt) at offset 0x8443 10148 bytes
font_02_sfnt_off0000a6fd.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA6FD 4324 bytes