Malicious PDF — malware analysis report

Static analysis result for SHA-256 93c9d4ce55df27ee…

MALICIOUS

PDF

32.6 KB Created: 2020-09-01 03:08:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83dc4fdc887f00e305af368802efd727 SHA-1: ba73c69833b41e104c7eefd89035bc5b332d7b2a SHA-256: 93c9d4ce55df27ee1ec9f58b9b2e53986e684243b3577a43e97f8c67ffef947f
120 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 pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, with numerous links hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the malicious URL and several benign-looking PDF links, suggesting a lure to a malicious site under the guise of providing content. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.com/wix?keyword=you%2527+re+so+beautiful+song+free
    • https://cdn.shopify.com/s/files/1/0431/7341/3028/files/80964756273.pdf
    • https://cdn.shopify.com/s/files/1/0434/6406/5188/files/68258196255.pdf
    • https://cdn.shopify.com/s/files/1/0450/8683/4851/files/story_writing_in_english_for_class_10.pdf
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/retesakonevuteresawokaji.pdf
    • https://cdn.shopify.com/s/files/1/0438/5544/6176/files/19615886788.pdf
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/vampire_the_masquerade_bloodlines_passwords.pdf
    • https://cdn.shopify.com/s/files/1/0434/0760/5918/files/8347797233.pdf
    • https://cdn.shopify.com/s/files/1/0428/1283/3959/files/vimanam_film_songs.pdf
    • https://cdn.shopify.com/s/files/1/0435/9648/0671/files/spring_framework_github.pdf
    • https://static.usrfiles.com/ugd/81d6a4_52ab54772cf54d0e88129216ddbdd15c.pdf
    • https://static.usrfiles.com/ugd/2ac701_337a0ec9e03b4c08871660873954470a.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_off00004413.bin
aa6c1217e26fe071e5c96881a8192187f07e674377974a04182337848306b8a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4413 5072 bytes
font_01_sfnt_off0000556c.bin
3fae1b7e65a4ae75e1fb26af9f0545ae58aa392e52bee07a01eedaba2b1b13ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x556C 9452 bytes

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