Malicious PDF — malware analysis report

Static analysis result for SHA-256 921563ebed5e8cd1…

MALICIOUS

PDF

42.4 KB Created: 2020-04-30 14:43:15 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: aed51084d713b2d26c2d7376cca2515a SHA-1: 17abc7fbe28db87472fe64a3c97fd6f23a4d43a0 SHA-256: 921563ebed5e8cd1c4aa6396355a4299a54246dfa6f5eceb5c8a5cca497737a2
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to PDF files with numeric slugs, indicative of a link farm or SEO abuse. The document body, though heavily obfuscated, contains references to 'Brother dcp- t300 driver' and application metadata, suggesting a lure to download drivers. The presence of numerous external URLs, combined with the ML classifier's high confidence, strongly suggests malicious intent, likely to redirect users to malicious content or exploit kits.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://mrstruitt.com/uploads/1/3/1/6/131606619/131606619.html#brother+dcp-+t300+driver
    • http://growerschoicecreditunion.com/uploads/1/3/0/8/130814516/7729562.pdf
    • http://truevictoryperformance.com/uploads/1/3/0/7/130775162/5462527.pdf
    • http://netdevl.com/uploads/1/3/0/8/130813667/c32c70a51ba.pdf
    • http://earthshineenergy.com/uploads/1/3/0/5/130540788/2221625.pdf
    • http://cohencollegecounseling.com/uploads/1/3/0/6/130621098/gixutifew-tujigekulefube-kosadijutejele.pdf
    • http://stathealthcareagency.com/uploads/1/3/0/5/130551130/0a2c0460969cf.pdf
    • http://sportkfitness.com/uploads/1/3/1/0/131071262/fabunokates-pitedojapesulew.pdf
    • http://wdaoklahoma.com/uploads/1/3/0/4/130435805/lupaduno.pdf
    • http://foryoureceptivo.com/uploads/1/3/0/6/130620483/jewuz.pdf
    • http://mumsbykandm.com/uploads/1/3/0/5/130588548/timalemupiberog-merevij-meniwilinopa-vixujelagivixa.pdf
    • http://961120lzl.com/uploads/1/3/1/4/131455198/liwiv.pdf
    • http://themarobishop.com/uploads/1/3/0/4/130436017/7799213.pdf
    • http://beftcommunity.org/uploads/1/3/0/7/130776735/a8f5a8dd551d19a.pdf
    • http://earthshineenergy.com/uploads/1/3/0/5
    • 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_off00006483.bin
366d4fc0893cd4939043a4e3a928c00793ca08bfc157908b73f2b4d9ef955525		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6483 12180 bytes
font_01_sfnt_off00007fe3.bin
ea0a9c940233dadad29bdb2aa6509b8fe11f2d0974af855ffd58094b3c02e866		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE3 7444 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.