Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff6649c2d0127676…

MALICIOUS

PDF

131.2 KB Created: 2020-08-03 13:28:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0fc55a710940b3afa0d48d76055eef9d SHA-1: dee827042f7f03f502bdc3c7e6e0430ecf1d117b SHA-256: ff6649c2d0127676227f50db4f48c8d9192dfd349a8478d55ffeaea0bd678819
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, ttraff.com, which is designed to lure users to malicious sites. The document body, though heavily obfuscated, contains the same URL. The PDF also hosts a large number of external links, many pointing to Shopify, suggesting a link farm for SEO manipulation to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=laser+ignition+system+in+ic+engine+pdf
    • http://files.horrortourers.com/uploads/1/3/1/6/131606056/d5036.pdf
    • http://files.nducuwangugi.com/uploads/1/3/2/7/132710601/4a6518039a2e82.pdf
    • http://files.abundantlivingbytyrolea.com/uploads/1/3/1/0/131071067/terekamepivokodikup.pdf
    • http://files.theajingroup.com/uploads/1/3/0/9/130969879/9838319.pdf
    • http://files.kimfirmston.com/uploads/1/3/1/4/131452950/dulafud.pdf
    • https://cdn.shopify.com/s/files/1/0430/5443/2410/files/17950694120.pdf
    • https://cdn.shopify.com/s/files/1/0434/4017/7317/files/jezewejegalezanipawuku.pdf
    • https://cdn.shopify.com/s/files/1/0434/0924/4316/files/76856782179.pdf
    • https://cdn.shopify.com/s/files/1/0434/7183/1193/files/76967360405.pdf
    • https://cdn.shopify.com/s/files/1/0431/2724/2903/files/64519079780.pdf
    • https://cdn.shopify.com/s/files/1/0431/3228/9180/files/50851035066.pdf
    • https://cdn.shopify.com/s/files/1/0433/2807/7992/files/fiwefirasalifux.pdf
    • https://cdn.shopify.com/s/files/1/0438/1753/3597/files/kunulonerusarorofu.pdf
    • https://cdn.shopify.com/s/files/1/0439/2851/8824/files/7010b_radio_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/9011/5748/files/icyveins_resto_shaman.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/kezotesiteribinizexewo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/mipofurewok.pdf
    • https://cdn.shopify.com/s/files/1/0432/9845/5705/files/sublime_text_keygen.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_off0001c62f.bin
b456fb7bb61d179366576458b1ac8199dac1e558d9d59e11542b419ade00a93d
pdf-font-stream PDF embedded font (sfnt) at offset 0x1C62F 5488 bytes
font_01_sfnt_off0001d8d5.bin
d392e61c45029c5ad27a6618d032450801fbe17a82160819ff9174a438f9e401
pdf-font-stream PDF embedded font (sfnt) at offset 0x1D8D5 10992 bytes