Malicious PDF — malware analysis report

Static analysis result for SHA-256 f603dcbec6350b3a…

MALICIOUS

PDF

44.7 KB Created: 2020-08-14 05:56:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06f3efc9cea852471ce3b6e6a0fdf7fe SHA-1: bd8a3c0a659a54cf005c5adf48c86ab2374ffea3 SHA-256: f603dcbec6350b3a2d1deba3279654c2581091cac42ee078469aa44eaee80efe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, which points to 'https://ttraff.com/pify?keyword=android+emulator+lite+version+for+pc'. The document body also contains this URL, presented as a lure for an 'Android emulator lite version for pc'. The file also exhibits characteristics of a PDF link farm, with numerous links to Shopify domains, one of which is identified as a potential redirector. The primary malicious link is designed to trick users into downloading potentially harmful content or visiting malicious sites.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=android+emulator+lite+version+for+pc
    • http://ginub.zizosa.com/uploads/1/3/2/8/132814930/5489321.pdf
    • http://setuku.edmondpiano.co.uk/uploads/1/3/1/8/131856570/guripopinalupitesaw.pdf
    • http://weluxetej.msspadc.org/uploads/1/3/0/7/130738732/fivowipa.pdf
    • http://files.aspirewellnessnow.com/uploads/1/3/1/3/131378993/nizolusexawe.pdf
    • http://walubu.natalieyoungmusic.com/uploads/1/3/1/0/131070036/fonobef.pdf
    • https://cdn.shopify.com/s/files/1/0440/1725/4565/files/hukum_arbitrase.pdf
    • https://cdn.shopify.com/s/files/1/0431/5804/4823/files/medical_fitness_certificate_format_students.pdf
    • https://cdn.shopify.com/s/files/1/0438/0993/1426/files/92329483960.pdf
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/tikovodovosuz.pdf
    • https://cdn.shopify.com/s/files/1/0429/7916/4314/files/larupituvelijobe.pdf
    • https://cdn.shopify.com/s/files/1/0437/6992/1688/files/konewepikewakogajavodo.pdf
    • https://cdn.shopify.com/s/files/1/0433/3545/0774/files/24260733919.pdf
    • https://cdn.shopify.com/s/files/1/0429/1811/7543/files/22489890926.pdf
    • https://cdn.shopify.com/s/files/1/0429/1965/7628/files/kinobo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3128/2335/files/syntax_sql.pdf
    • https://cdn.shopify.com/s/files/1/0432/3957/1611/files/segazodipepipuzowedun.pdf
    • https://cdn.shopify.com/s/files/1/0435/4211/8555/files/battle_run_hack_no_survey.pdf
    • https://cdn.shopify.com/s/files/1/0429/1880/5657/files/tekumuxa.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_off000070b3.bin
9786d18e3656fa9019a13f752bf0f101056a683ce895fddc2541872f5277e249		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70B3 5352 bytes
font_01_sfnt_off000082cc.bin
5761fb160c51fe37d2e2004f1ee24d2721245a0f085bd18d865ee3c631af040c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82CC 10196 bytes

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