Malicious PDF — malware analysis report

Static analysis result for SHA-256 e45951028969f40b…

MALICIOUS

PDF

39.2 KB Created: 2020-08-27 20:06:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bcd0380604314c40318c73a76eecb7aa SHA-1: 77317a2bd71d76db255da2bebd17b08fbd5b7d4c SHA-256: e45951028969f40bf66e8feec48fd7af98f4728ca2d87f8de170620d4ebc3d30
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=kingsman+the+secret+service+torrent, which is likely the primary malicious destination. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, increasing the attack surface.

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=kingsman+the+secret+service+torrent
    • http://bixup.politicsarchive.com/uploads/1/3/0/7/130739204/f479a5042c2.pdf
    • http://raxuma.1upc.org/uploads/1/3/2/7/132740449/xelafuvijowamu.pdf
    • https://cdn.shopify.com/s/files/1/0459/7225/8983/files/29506976782.pdf
    • https://cdn.shopify.com/s/files/1/0433/3951/4006/files/povulu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70945418412.pdf
    • https://cdn.shopify.com/s/files/1/0431/1184/1949/files/development_process.pdf
    • https://cdn.shopify.com/s/files/1/0433/6871/0309/files/all_about_catfish_farming.pdf
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/48482074906.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kirojaj.pdf
    • https://cdn.shopify.com/s/files/1/0435/9172/9309/files/euripides_medea_summary.pdf
    • https://cdn.shopify.com/s/files/1/0441/2299/6888/files/beautiful_wallpaper_for_pc_free.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_off00005965.bin
ca7f5ab2d97b90e1a0fa395465641da559e8ae1ea06015a8bff629758234a29c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5965 5212 bytes
font_01_sfnt_off00006af3.bin
0e757979cb5d86997d4620a38431c31ca966f3b0083b18ba46e1e6cf738129fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF3 10916 bytes

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