Malicious PDF — malware analysis report

Static analysis result for SHA-256 4634b21ffe0ab969…

MALICIOUS

PDF

36.0 KB Created: 2020-08-23 23:48:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01431b014fe25fea8242d834b922ab31 SHA-1: 3f9deea738285ce92743bc2b91c27fe20bfaf024 SHA-256: 4634b21ffe0ab969481fabae13753e2399d95a3ce609bbe38d77558dc509485d
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the text 'Incident reporting policy statement' and the malicious URL. The PDF also exhibits characteristics of a link farm, with numerous external links, including one to 'cdn.shopify.com/s/files/1/0434/0996/5212/files/lolamev.pdf', suggesting a delivery mechanism for further malicious 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=incident+reporting+policy+statement
    • http://gupular.wjcreativestudios.com/uploads/1/3/0/9/130969423/9450ee56.pdf
    • http://gigajeda.engramikhalil.com/uploads/1/3/1/4/131407089/kenax.pdf
    • http://pugud.mrgauronroom.com/uploads/1/3/1/0/131070054/bfb1d4b7101.pdf
    • http://vobuxoge.crowleyisdedtech.com/uploads/1/3/1/4/131453433/jalegapikovijoratog.pdf
    • http://borumap.viana-motion.com/uploads/1/3/2/6/132683138/livupurikub.pdf
    • https://cdn.shopify.com/s/files/1/0434/0996/5212/files/lolamev.pdf
    • https://cdn.shopify.com/s/files/1/0435/3500/7893/files/winter_air_conditioning_system_ppt.pdf
    • https://cdn.shopify.com/s/files/1/0430/7661/6346/files/zuxagi.pdf
    • https://cdn.shopify.com/s/files/1/0439/4670/5051/files/bromination_of_acetanilide.pdf
    • https://cdn.shopify.com/s/files/1/0429/7680/5013/files/441065349.pdf
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/gojomafasasikapipupowojed.pdf
    • https://cdn.shopify.com/s/files/1/0450/3722/4094/files/wow_archaeology_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/4705/0661/files/svg_animation_website_templates_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/9276/2006/files/16362699576.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8360/files/57673474481.pdf
    • https://cdn.shopify.com/s/files/1/0433/2909/3784/files/midowepo.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_off000050cf.bin
84e9ba5c10a839b495b312290b179f64db3ef81d8e01893476403636cbc0450c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50CF 5432 bytes
font_01_sfnt_off0000632f.bin
63e71ce9ac6b3a3cc7d09d66d77a5f641bdf3858ac838d710bd08f93b2d26d8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x632F 9412 bytes

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