Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d22bb1c7eb220fc…

MALICIOUS

PDF

55.9 KB Created: 2020-08-30 03:32:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9961540cfe1f8e9ef8c9f6f7e81007f SHA-1: 4fc2969bd2bdb67327f23cb4815fce6283fc0e73 SHA-256: 2d22bb1c7eb220fc1584003b2bfeed2b61a381f16be57f63565bf5312a53c37f
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/wix?keyword=2001+lincoln+ls+v8+owners+manual'. This URL is presented within the document body, disguised as a vehicle owner's manual, indicating a social engineering lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, likely for SEO manipulation or to obscure the malicious destination. The ML classifier strongly flags this PDF as malicious.

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.ru/wix?keyword=2001+lincoln+ls+v8+owners+manual
    • https://static.usrfiles.com/ugd/d2751c_8163046153c846d5bd9d2d05d5574e1a.pdf
    • https://static.usrfiles.com/ugd/72b0e7_fb3e034d2d5644b2b78b636c354cf3c6.pdf
    • https://static.usrfiles.com/ugd/54fa57_ffb6a8cb456a4e7fa451b99f06502f99.pdf
    • https://static.usrfiles.com/ugd/bb13a2_eadc2dd3bab140f3b331c8b205e119d1.pdf
    • https://cdn.shopify.com/s/files/1/0440/8573/9685/files/tunosutiku.pdf
    • https://cdn.shopify.com/s/files/1/0429/4708/4447/files/billie_jean_audio_song_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0428/4638/8380/files/arborist_report_melbourne.pdf
    • https://cdn.shopify.com/s/files/1/0435/4048/0164/files/pillars_of_eternity_official_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/9191/1066/files/likukojew.pdf
    • https://cdn.shopify.com/s/files/1/0433/7880/2846/files/86758347150.pdf
    • https://cdn.shopify.com/s/files/1/0436/9901/1738/files/autocad_3d_shortcut_commands.pdf
    • https://cdn.shopify.com/s/files/1/0433/2965/0843/files/actor_jeeva_movie.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4830/files/35052385119.pdf
    • https://cdn.shopify.com/s/files/1/0429/2971/7407/files/pupapi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6961/1932/files/rectangular_waveguide_characteristic_impedance_calculator.pdf
    • https://cdn.shopify.com/s/files/1/0430/0649/2823/files/lazodasifofemodipunu.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_off00007a93.bin
536659e4d4cda7ffa5bd33e681c7b6d1c5894c457feb398c4094f34680dbb7eb
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A93 5520 bytes
font_01_sfnt_off00008d4b.bin
12b2b898db19275177c6bc4b7a9d7cb1bf97c1e5eea222ec5f216cfcdf76a88e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D4B 14796 bytes
font_02_sfnt_off0000bbd7.bin
713933360072c9d59346590fad668f98c3603c6d2b72ed941ce85481f6af0b74
pdf-font-stream PDF embedded font (sfnt) at offset 0xBBD7 16060 bytes