Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8a29f15eb0d2155…

MALICIOUS

PDF

49.2 KB Authoring application: SWFTools
MD5: ada86f2ecfd0ce0ea3824cfad7403660 SHA-1: 3a4bc31756c083e63ca6f1e92abdb5db0b010636 SHA-256: b8a29f15eb0d2155f6acf098e9e6a2032e0282f5097f38448d7606616421e38b
150 Risk Score

Malware Insights

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

The PDF was flagged by ClamAV as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and a critical heuristic detected a large number of external PDF links, indicating a link farm. The embedded URLs suggest a phishing or traffic redirection scheme. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://morethanapipeline.org/uploads/1/3/0/6/130639298/gulubixorekisow.pdf
    • http://meliciosa.com/uploads/1/3/0/2/130289443/107b0e6f9404a6.pdf
    • http://milwaukeebusinessreviews.com/uploads/1/3/0/5/130544090/f3e186bc86d18f2.pdf
    • http://malokuzigu.huaweinew.ru/uploads/2020/01/28/venuwili_nuredewed_xebabelitu_girajuxot.pdf
    • http://danilorojasmendez.tech/uploads/2020/01/28/32ab9e6d.pdf
    • http://mynaturalhairspa.com/uploads/1/3/0/3/130379356/130379356.html#dolce+amore+english+subtitles

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000114a.bin
9b91718944f76fa3e513a7bb64b14725a2f291113e53698c06308db197796487		 pdf-font-stream PDF embedded font (sfnt) at offset 0x114A 9204 bytes

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