Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0623b7eb524d4fa…

MALICIOUS

PDF

39.9 KB Authoring application: Soda PDF
MD5: fdef6dee36acba7be8b6314d9b41cd85 SHA-1: 781cd21ebb2f4dcfb50597965de355ed15de3cda SHA-256: e0623b7eb524d4fac49c91c37ada12f395ffa042eea711d3fdd5b4b4baf6c28f
150 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as phishing. The document body, though partially corrupted, contains text related to 'Hqm quarry rust' and includes numerous URLs, reinforcing the idea that the document is designed to drive traffic to potentially malicious sites.

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://nuzexuwod.weebly.com/uploads/1/3/0/5/130539657/nusipakopemogodadupo.pdf
    • http://sosi.multimodal.pro/uploads/2020/01/28/9fc10.pdf
    • https://fekujugodobeful.weebly.com/uploads/1/3/0/6/130604919/92ddbc36867f.pdf
    • http://topsltd.bm/uploads/1/3/0/3/130379696/gevoledekiratawanem.pdf
    • http://dapisevut.cgt-capgemini-ts.net/uploads/2020/01/27/9f9bb5bed9cb1.pdf
    • http://hypocotyle.ru/uploads/2020/01/29/juzaridetaxetagax.pdf
    • http://gekoxiba.multilinglab.ru/uploads/2020/01/29/4383432.pdf
    • https://xupixatotox.weebly.com/uploads/1/3/0/2/130272452/wosivorunu-gaxuv-xamoma.pdf
    • http://mikesrefinishing.com/uploads/1/3/0/6/130604984/nelusebefuxovi-mevudopopefoke.pdf
    • http://thecvap.org/uploads/1/3/0/6/130605381/130605381.html#hqm+quarry+rust

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000124c.bin
d0ae16297b72d0ccd103ab706bcc114b70674da654b21634c4a3408223b77c90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x124C 8712 bytes
font_01_sfnt_off00005592.bin
6db2f878e0fd57d3a351d0d81a5ccd7b58f68df6728dadc3aee3ebeb1a1d6e60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5592 16068 bytes

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