Malicious PDF — malware analysis report

Static analysis result for SHA-256 befe0df9ffe5f31f…

MALICIOUS

PDF

46.8 KB Authoring application: PDF Studio
MD5: f07280f4cb1b96247e253219e4635137 SHA-1: a034650e1d044bde3fec6689e3c564ee6484603e SHA-256: befe0df9ffe5f31f09f98b01cf2edc76cd30d7f09e1b676c90113b12ce999e80
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a malicious intent. The primary goal appears to be directing users to a network of linked PDF documents hosted on various domains, likely for phishing or SEO spam purposes.

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 http://cloud-token-wallet.com/uploads/1/3/0/2/130288348/7430891.pdf
    • http://audiostart31.icu/uploads/2020/01/28/powusapiforubupovuv.pdf
    • http://menagainstcancer.net/uploads/1/3/0/6/130621353/dajikogeb.pdf
    • http://franklincountystrong.com/uploads/1/3/0/4/130476628/d02682c3d0.pdf
    • http://mtdistrictlwml.com/uploads/1/3/0/5/130551184/3772707.pdf
    • http://thecannabisbusinessalliance.com/uploads/1/3/0/2/130270847/2288074.pdf
    • http://dancefitdanceacademy.com.au/uploads/1/3/0/6/130621432/dilekolobelole.pdf
    • http://7315robotics.com/uploads/1/3/0/6/130621357/libetutipaloge-zupikuvole-misudosojetebe.pdf
    • http://alexpepstein.com/uploads/1/3/0/6/130640062/rimuzugodobeniv.pdf
    • http://asphaltisland.com/uploads/1/3/0/2/130291624/0049683714fb5.pdf
    • http://sportscomplexlv.com/uploads/1/3/0/4/130435624/rufaruvimafakovex.pdf
    • https://wevesifedi.weebly.com/uploads/1/3/0/4/130483981/ripox.pdf
    • http://tcsonline.net/uploads/1/3/0/2/130273801/130273801.html#dell+r710+bios

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001308.bin
38a4ab2fc729e7dc0ae34e3156691d06fb167ac259d9a4ade033dd53b74c54ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1308 7868 bytes
font_01_sfnt_off00007100.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7100 16036 bytes

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