Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee444c1cd8495c9…

MALICIOUS

PDF

43.0 KB Created: 2020-08-21 17:44:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 823211873fdfb492b7b1201ece6cfe49 SHA-1: aec2d0bc1977a5e5c905dc025d14e2c6a33165ef SHA-256: 2ee444c1cd8495c904667fb605be51cbbd690a0d63a825ed81b5d18ae0d4c88d
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, including a critical redirector link to 'ttraff.cc', which is flagged as malicious. The document body, though heavily obfuscated, contains text related to sheet music and the malicious URL, suggesting a lure. The presence of a link farm heuristic indicates a large number of outbound links, many pointing to Shopify, likely for SEO manipulation or to host further malicious content. The primary malicious IOC is the redirector URL.

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/pify?keyword=colors+of+the+wind+trumpet+sheet+music
    • http://files.malouky.com/uploads/1/3/0/7/130739718/zotizeposez.pdf
    • http://files.landscapeservicenassaucounty.com/uploads/1/3/0/8/130873846/japenu.pdf
    • http://files.ashlihurt.com/uploads/1/3/1/4/131438002/e1988baa2618ba4.pdf
    • http://paxena.westboundgermanshepherds.com/uploads/1/3/2/6/132695399/1085023.pdf
    • https://cdn.shopify.com/s/files/1/0428/3210/1543/files/zudibukuxinagatenox.pdf
    • https://cdn.shopify.com/s/files/1/0433/8365/2506/files/85644886679.pdf
    • https://cdn.shopify.com/s/files/1/0431/5856/9115/files/52796576799.pdf
    • https://cdn.shopify.com/s/files/1/0435/2973/2248/files/mathematical_logic_books.pdf
    • https://cdn.shopify.com/s/files/1/0440/0267/2798/files/33060452680.pdf
    • https://cdn.shopify.com/s/files/1/0436/6457/2569/files/87855854785.pdf
    • https://cdn.shopify.com/s/files/1/0437/5802/6903/files/karenabazuza.pdf
    • https://cdn.shopify.com/s/files/1/0431/0073/3596/files/calculus_2_series_and_sequences.pdf
    • https://cdn.shopify.com/s/files/1/0437/8624/0162/files/vexefipizukomizapobeto.pdf
    • https://cdn.shopify.com/s/files/1/0434/1320/9246/files/86429161319.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_off00006c21.bin
c744aab74f04900dd128ee06d6c9b08fbd8146ec2c57a353263cc78278cd17b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C21 5180 bytes
font_01_sfnt_off00007da6.bin
4a7d1ed2d8df19fd17f58a39f61f3697823c838819aa328fcac2bc6543b4331e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA6 9876 bytes

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