Malicious PDF — malware analysis report

Static analysis result for SHA-256 7feaa9b1d4cd0fcc…

MALICIOUS

PDF

44.9 KB Created: 2020-08-21 22:59:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b87c8b1ebc651523b8693f2cacb5dd9d SHA-1: f8e46cde46daf861fd9c162dd3d8291d6cd35fd5 SHA-256: 7feaa9b1d4cd0fcc888f8fe4f369493b9a1f8245b88ed78fc65f96f4e1a9dcb6
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to a 'Football game free for mobile' and the malicious URL itself. The presence of a link farm heuristic further indicates a malicious intent to redirect users to potentially harmful content.

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=football+game++free+for+mobile
    • http://files.thunderboyasia.com/uploads/1/3/0/7/130775025/b8f03.pdf
    • http://files.northerneventrentals.com/uploads/1/3/1/0/131069863/zurozufulimivif_bowalunu_sixorisame.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5258/files/93105675789.pdf
    • https://cdn.shopify.com/s/files/1/0435/2707/8052/files/competitor_analysis_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/0181/3915/files/the_beatles_love_songs_album_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/xumosujazowido.pdf
    • https://cdn.shopify.com/s/files/1/0432/2761/1295/files/vumadadatobopamew.pdf
    • https://cdn.shopify.com/s/files/1/0435/3405/7621/files/logiluvejuvemafemosi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9423/files/carboplatin_us_prescribing_information.pdf
    • https://cdn.shopify.com/s/files/1/0434/2710/2887/files/65498813530.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_off0000732e.bin
7e727a5f1ccb8d7027f3a22322001321d36b3f3b4df3507cdce6d4df7651f66d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x732E 5004 bytes
font_01_sfnt_off0000842a.bin
b6e6422586d84cafbe905c7e66ea74d95e8d40626bdfbffc316c7c69cc6618d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x842A 10316 bytes

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