Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc87ebb7461bee86…

MALICIOUS

PDF

43.4 KB Created: 2020-08-09 19:58:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89386b8f98c1f8b8c94aa5222cf47424 SHA-1: cf7ee389d56ccd65f4bdd4ce1c7f09e8154b695c SHA-256: fc87ebb7461bee864fb6a2e48603335f353d439a3c3c62428f9b21209b326a89
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a known malicious redirector. The document body, though partially corrupted, contains text referencing a 'menu pdf' and the malicious URL. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of a link to malicious infrastructure, and PDF_SEO_LINK_FARM indicates a large number of external links, suggesting a link farm or distribution network. The primary malicious URL is https://ttraff.ru/pify?keyword=freshly+squeezed+menu+pdf.

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/pify?keyword=freshly+squeezed+menu+pdf
    • http://pukij.oldfieldcellars.com.au/uploads/1/3/2/6/132681670/995b2731ab.pdf
    • http://files.noreencoupenpleinair.com/uploads/1/3/2/8/132814303/9157ecf3.pdf
    • http://files.lenkaflaherty.com/uploads/1/3/1/6/131607163/9472500.pdf
    • http://files.eclipsegamingsupply.com/uploads/1/3/2/6/132681976/3048515.pdf
    • http://files.cn.lglministry.org/uploads/1/3/2/3/132303230/towopoburuluwi.pdf
    • https://cdn.shopify.com/s/files/1/0448/8301/7895/files/altar_de_muertos_prehispanico.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7415/files/xuredoduf.pdf
    • https://cdn.shopify.com/s/files/1/0439/5817/3854/files/papabugokabuloniboxevupig.pdf
    • https://cdn.shopify.com/s/files/1/0436/3314/8062/files/50583110254.pdf
    • https://cdn.shopify.com/s/files/1/0428/5205/7244/files/great_teacher_onizuka_episode_1.pdf
    • https://cdn.shopify.com/s/files/1/0438/1409/2960/files/google_drive_symlink.pdf
    • https://cdn.shopify.com/s/files/1/0439/6895/4526/files/16255814701.pdf
    • https://cdn.shopify.com/s/files/1/0438/5095/6960/files/how_to_find_sd_card_on_mac.pdf
    • https://cdn.shopify.com/s/files/1/0433/8027/7406/files/7070447526.pdf
    • https://cdn.shopify.com/s/files/1/0436/2433/3472/files/add_github_repository_to_local.pdf
    • https://cdn.shopify.com/s/files/1/0432/3665/5259/files/46892021532.pdf
    • https://cdn.shopify.com/s/files/1/0438/3614/5814/files/7495465524.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000046c0.bin
cf1fd1ff7349b378394c35b6aa36b8e3f08fc8508ef6cdca0d6917b192780bf5
pdf-font-stream PDF embedded font (sfnt) at offset 0x46C0 4948 bytes
font_01_sfnt_off0000575e.bin
6959a9e6b586bb22c4bd4476aa4192d2e8e1b1d39447c925e06b7825eb471e68
pdf-font-stream PDF embedded font (sfnt) at offset 0x575E 8568 bytes
font_02_sfnt_off00007326.bin
26e8a02630713cfc939f97de146fab6389ef7aa34804feed580bbb325ccb9796
pdf-font-stream PDF embedded font (sfnt) at offset 0x7326 9112 bytes
font_03_sfnt_off00009232.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9232 4324 bytes