Malicious PDF — malware analysis report

Static analysis result for SHA-256 2712c46673d5b420…

MALICIOUS

PDF

43.5 KB Created: 2020-08-30 03:45:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae995d885daa8aae911fd48e34a37e43 SHA-1: 488ac2a728c752fb30ef4006d927f659bf0dc251 SHA-256: 2712c46673d5b420cfb298dadca56d713a66c39ce38973e6b15acccd02dfce69
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to sheet music and the malicious URL. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify. This suggests a phishing or malware distribution attempt, likely using the sheet music theme as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=count+your+blessings+sheet+music+free
    • https://cdn.shopify.com/s/files/1/0434/6265/6157/files/37621634514.pdf
    • https://cdn.shopify.com/s/files/1/0435/7485/3793/files/45241805198.pdf
    • https://cdn.shopify.com/s/files/1/0430/6580/2905/files/rekoxinikafezewit.pdf
    • https://cdn.shopify.com/s/files/1/0429/5216/3482/files/attribution_theory_psychology.pdf
    • https://static.usrfiles.com/ugd/5e81b9_5a9487c550fa46f187da4d54f5ab1004.pdf
    • https://static.usrfiles.com/ugd/7dd30d_cd956d6624354b1bb2e20fc2c68b1c52.pdf
    • https://static.usrfiles.com/ugd/b8c837_74ef12afff234ccaae618b61aebf2bca.pdf
    • https://static.usrfiles.com/ugd/b8c837_7591dcc17de04f69aac1113b6b9d1fc8.pdf
    • https://static.usrfiles.com/ugd/9757e7_c864401a34474521ababb32b877fc766.pdf
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/69170411226.pdf
    • https://cdn.shopify.com/s/files/1/0450/0858/4862/files/retuxumumerunutok.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42539854631.pdf
    • https://cdn.shopify.com/s/files/1/0439/0099/3704/files/eine_kleine_nachtmusik_piano_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/9181/2767/files/varogejisubekaruresum.pdf
    • https://static.usrfiles.com/ugd/bfbc46_40502255736d41c48b45032b2004ed12.pdf
    • https://static.usrfiles.com/ugd/73cb9e_9fe078c0fa974c409c8c065ce8a233d2.pdf
    • https://static.usrfiles.com/ugd/9c0842_1ae22651dd5b4bd195a1af6db2335d79.pdf
    • https://static.usrfiles.com/ugd/0047a4_2722c74a34c245498918cd06cd1d6d25.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_off00006d0d.bin
756b883235a306d9c665e936a318a321f58e9c7d638b120832861e380d18d846
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0D 5232 bytes
font_01_sfnt_off00007ec2.bin
1bb7d5a8f8193085f7dbee313479c679922ccef252433eeffe62dfdd180f5f6b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC2 10008 bytes