Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2e58a7efafa87a3…

MALICIOUS

PDF

35.3 KB Created: 2020-06-04 01:17:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b63e3eeaff40dfffb83e547c914440ac SHA-1: c4d605d81b8fdbed7c34b7c8e4b3e3f50ce21b99 SHA-256: d2e58a7efafa87a3c4cc04be59ffd0e1db6fe94bbedc7083662082f51f316747
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to PDF files hosted on various domains. The document body and heuristics indicate a lure related to 'Bcm2045 driver windows xp', suggesting a phishing or malware distribution attempt. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, but the extensive link farm and the specific lure indicate a drive-by download or phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://1j2.undesirable.us/uploads/1/3/0/5/130551270/130551270.html#bcm2045+driver+windows+xp
    • http://awbphotography.ca/uploads/1/3/0/5/130539125/6836308.pdf
    • http://beverlywilshire.org/uploads/1/3/1/4/131438323/jegufiki.pdf
    • http://annalperin.net/uploads/1/3/1/3/131379324/biminaroxufupu-letojebupave-pukonuzanix-womiturapiv.pdf
    • http://prendoriancrab.com/uploads/1/3/0/9/130969026/gezil_degegarux_pamajubowodawu_xafeseruwurez.pdf
    • http://avasattic69.com/uploads/1/3/0/5/130588957/6550653.pdf
    • http://pinestschool.com/uploads/1/3/1/4/131453274/bunetipof.pdf
    • http://hvaband.net/uploads/1/3/1/1/131164127/bubujigemokukujew.pdf
    • http://frenchbulldogsohio.com/uploads/1/3/0/6/130621328/62b47280c924b57.pdf
    • http://proburnfit.com/uploads/1/3/0/5/130588511/jiwez_lamaragixuji.pdf
    • http://1j2.undesirable.us/uploads/1/3/0/5/130551270/terms.html
    • http://1j2.undesirable.us/uploads/1/3/0/5/130551270/dmca.html
    • http://1j2.undesirable.us/uploads/1/3/0/5/130551270/policy.html
    • https://zaloguko.files.wordpress.com/2020/06/98133019843.pdf
    • https://fewogixaba.files.wordpress.com/2020/06/31048797416.pdf
    • https://buvokekuw.files.wordpress.com/2020/06/3006973803.pdf
    • https://toruxot.files.wordpress.com/2020/06/ruxufinosidadasov.pdf
    • https://xagixamowow.files.wordpress.com/2020/06/78135213970.pdf
    • https://winubuv.files.wordpress.com/2020/06/8563626472.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005dd0.bin
198a18d458ea2f8d022d6c3e59758febf74462e9f6684b6fa221179cba6f2bca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD0 10824 bytes

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