Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fc5094f602b9aa7…

MALICIOUS

PDF

42.6 KB Created: 2020-08-27 16:49:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 734929c0cc6751dd3be4c0b8a4617cbb SHA-1: 8d310703b88f39733fb291ef6ce73f2d581cb509 SHA-256: 4fc5094f602b9aa7df6628cb4d1c75175372a2d3151a088827ba50a95d3fc267
160 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary link directs to 'ttraff.com', a known redirector. The document also exhibits characteristics of a link farm, with many links pointing to Shopify-hosted PDFs, likely to manipulate search engine results or distribute further malicious content. The presence of a visible LOLBin command execution instruction suggests an attempt to execute arbitrary code.

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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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.com/pify?keyword=valor+absoluto+y+valor+relativo
    • http://files.mohscb.com/uploads/1/3/0/7/130739322/9225314.pdf
    • https://cdn.shopify.com/s/files/1/0433/9610/4348/files/gudomonepekubakapijoti.pdf
    • https://cdn.shopify.com/s/files/1/0463/6842/4091/files/awesome_oscillator_mt4.pdf
    • https://cdn.shopify.com/s/files/1/0440/0496/6565/files/windows_powershell_commands_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/9010/7815/files/new_headway_beginner_4th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0461/8456/2851/files/chunkzz_movie_with_english_subtitles.pdf
    • https://cdn.shopify.com/s/files/1/0434/1035/8423/files/xodoxasugerikigi.pdf
    • https://cdn.shopify.com/s/files/1/0447/8101/1093/files/allahabad_state_university_ba_time_table_2020.pdf
    • https://cdn.shopify.com/s/files/1/0439/1777/0904/files/honda_hrr216_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/7179/8424/files/72222023846.pdf
    • https://cdn.shopify.com/s/files/1/0433/9816/8743/files/mathematical_statistics_lecture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0464/7249/5272/files/hitachi_starboard_software_9._6.pdf
    • https://cdn.shopify.com/s/files/1/0434/4043/9446/files/kuvujikudiwo.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_off00005998.bin
e8b9e24ac4df57feeede60d57e54f6d7e50143b141c00849f9315373473c41ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x5998 4720 bytes
font_01_sfnt_off000069c2.bin
c1640f44949f7456aef350fb342e2f75d7ab70318f88e3fb0e75e6008672a2e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x69C2 11148 bytes
font_02_sfnt_off00008e0e.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E0E 4324 bytes