Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd6b12324101b814…

MALICIOUS

PDF

41.9 KB Created: 2020-08-29 04:49:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86bc369dfe92e984ef15d9d773aae371 SHA-1: be89170084e8f6890b2e268ce75ca00da290a817 SHA-256: bd6b12324101b8149ec3cf4ed12101f6f307d8d0468f6d2f0d61d535255ab358
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=biografia+de+lawrence+kohlberg'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which are hosted on cdn.shopify.com. The document body, though partially corrupted, contains the same lure text and the malicious URL, suggesting the primary intent is to trick the user into visiting the redirector.

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=biografia+de+lawrence+kohlberg
    • https://cdn.shopify.com/s/files/1/0429/8348/9687/files/bedota.pdf
    • https://cdn.shopify.com/s/files/1/0432/5441/5515/files/apache_poi_read_excel_file.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/circular_motion_experiment.pdf
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/9671648778.pdf
    • https://cdn.shopify.com/s/files/1/0428/2250/0518/files/50867868991.pdf
    • https://static.usrfiles.com/ugd/b8c837_a2c4bba5127a4c2b93fd32c817457492.pdf
    • https://static.usrfiles.com/ugd/b8c837_95b63f57fc54495db8ce1454c6586e8f.pdf
    • https://static.usrfiles.com/ugd/b8c837_9d6ac805ccef4705aeed88c6bf67e36f.pdf
    • https://static.usrfiles.com/ugd/b8c837_40b148eccf604eb5a7d22e4b476bb0ef.pdf
    • https://static.usrfiles.com/ugd/b8c837_d5cf7038ba8e407aaeb3b2ee5859a905.pdf
    • https://cdn.shopify.com/s/files/1/0432/4586/3067/files/toradudefusimibeb.pdf
    • https://cdn.shopify.com/s/files/1/0433/3414/0056/files/61061577221.pdf
    • https://cdn.shopify.com/s/files/1/0434/0026/5878/files/under_the_dome_stephen_king.pdf
    • https://cdn.shopify.com/s/files/1/0433/3672/8726/files/dapebepixirite.pdf
    • https://cdn.shopify.com/s/files/1/0459/2245/1623/files/61037576676.pdf
    • https://static.usrfiles.com/ugd/b8c837_2810cdd32c5249599da4891bfd40db03.pdf
    • https://static.usrfiles.com/ugd/b8c837_e285629aa57b4869b8e57c127a89b030.pdf
    • https://static.usrfiles.com/ugd/b8c837_c31ce49a0a824c0f8d57fbc53cc4e974.pdf
    • https://static.usrfiles.com/ugd/b8c837_0b584c5a188d44db894cea11f2a13cd0.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_off000066ed.bin
ee87fac913e6236f6253176378af659153a75ea123299bbf902f3dca9e4953b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x66ED 5448 bytes
font_01_sfnt_off0000797f.bin
3d6299037ef60fa9765e238f8bee25f623958792029713165d64f31c06cf1a3d
pdf-font-stream PDF embedded font (sfnt) at offset 0x797F 9652 bytes