Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa0ee8beb9dc03e9…

MALICIOUS

PDF

39.5 KB Created: 2020-08-16 18:14:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 019ae6bd5314144c6f9c9fc8deae5433 SHA-1: 218d813879bed9126d9bfa6973b8560f5232b861 SHA-256: aa0ee8beb9dc03e9d9f5506b6d7f2d65cebe5a7cb971fa723c5a82df73da7dfc
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 a reference to this URL and the phrase 'lily pad template printable', suggesting a lure. The PDF also contains a large number of external links, many hosted on Shopify, which is flagged as a link farm. The primary malicious IOC is the redirector URL.

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/pify?keyword=lily+pad+template+printable
    • http://zaruze.jordangolfdesign.com/uploads/1/3/2/6/132682076/denezixogagefez-xitopiv-nedalojimero.pdf
    • http://files.zumbawithmelody.com/uploads/1/3/2/8/132814166/dubavuwolow.pdf
    • http://vujadoti.theuniversalgospel.com/uploads/1/3/1/4/131409310/sexiwategimovemuma.pdf
    • http://files.hempfilms.com/uploads/1/3/1/4/131483005/3691377.pdf
    • http://files.powdermillbusinesscenter.com/uploads/1/3/2/6/132695392/cd9536b798.pdf
    • https://cdn.shopify.com/s/files/1/0427/9956/2911/files/tozifusutoponer.pdf
    • https://cdn.shopify.com/s/files/1/0437/7434/5365/files/revekuzurivudunuzeguviga.pdf
    • https://cdn.shopify.com/s/files/1/0437/4131/5223/files/15373865145.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xogasetixudaxaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/3262/4797/files/10312576183.pdf
    • https://cdn.shopify.com/s/files/1/0437/0202/6393/files/14452964733.pdf
    • https://cdn.shopify.com/s/files/1/0433/1202/1657/files/xuzobupemuxizi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/73219477033.pdf
    • https://cdn.shopify.com/s/files/1/0428/6827/7415/files/zogelotogakuridezo.pdf
    • https://cdn.shopify.com/s/files/1/0428/1624/1831/files/fefifasozurikenazalusura.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_off00005d38.bin
b733769ac4f96ce55327ce142d9304333bb6cf35ee5b4ababbb9d3ef2bae6519		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D38 5112 bytes
font_01_sfnt_off00006e7d.bin
ed2d3e999454be8006ed3f8c0f74e9cbefafb06bc514e1ea6661fcf79ee33c10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7D 10224 bytes

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