Malicious PDF — malware analysis report

Static analysis result for SHA-256 cea5d44f0592b7dd…

MALICIOUS

PDF

33.9 KB Created: 2020-08-21 21:47:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b01d37261bf81183779985e76e100db SHA-1: e1d0e362b44133ed635e79f0e95e17a64af52120 SHA-256: cea5d44f0592b7ddcc752748d449d813c39abeba8bfd0e43af7841585b177c73
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a malicious redirector and link farm, as indicated by critical heuristic firings. It contains numerous embedded links, with a primary redirector URL pointing to 'https://ttraff.com/pify?keyword=azhage+azhage+kathakali+song+karaoke'. The document body is heavily obfuscated, but the presence of this URL and the link farm structure strongly suggest an attempt to lure users to malicious content or downloads. No scripts were extracted, limiting further analysis of specific payload delivery mechanisms.

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.com/pify?keyword=azhage+azhage+kathakali+song+karaoke
    • http://files.skateyogi.com/uploads/1/3/1/8/131856331/6141207.pdf
    • http://files.whispersofthedarkmoon.net/uploads/1/3/0/8/130814058/8313925.pdf
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/god_of_war_3_android_phone_game.pdf
    • https://cdn.shopify.com/s/files/1/0434/3706/4354/files/wiwivesutezurapinukugi.pdf
    • https://cdn.shopify.com/s/files/1/0437/2738/8826/files/65397362081.pdf
    • https://cdn.shopify.com/s/files/1/0429/7303/6697/files/animated_discord_emojis.pdf
    • https://cdn.shopify.com/s/files/1/0435/8144/0168/files/ccg_cable_gland_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4387/files/jewiwujosiledolexidi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7449/4369/files/monafemajizuzotaresuxikam.pdf
    • https://cdn.shopify.com/s/files/1/0439/7203/4718/files/gantt_chart_excel_template_xlsx.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_off00003f49.bin
2af83cb56a229875b1b48b992349b1b41dc40411842d8f569ca6faea6155d57f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3F49 5052 bytes
font_01_sfnt_off00005072.bin
58c9ca0f7f6a2ea2f2ff39c20a144ece1765b1789bede78f0d89ddd6226c8acb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5072 13252 bytes

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