Malicious PDF — malware analysis report

Static analysis result for SHA-256 bac27be9b8ef068d…

MALICIOUS

PDF

59.4 KB Authoring application: PDFedit
MD5: 06547414e21d641ad752a504484dc84c SHA-1: 1343ded96469ba923e2cd67016111c37e14b5784 SHA-256: bac27be9b8ef068d2161194ae5943fa2ed88c026b5e81e34cd47fc4392dbd80e
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a phishing or SEO spam campaign. ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a phishing intent. The ML classifier also strongly indicated maliciousness. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://eg21.com/uploads/1/3/0/5/130551554/6348690.pdf
    • http://agan.vip/uploads/1/3/0/2/130289296/6760baa.pdf
    • http://neoparadisum.shop/uploads/1/3/0/6/130620267/4849594.pdf
    • http://juvefc.football/uploads/1/3/0/7/130738969/0be106.pdf
    • http://naturalisllc.net/uploads/1/3/0/6/130620480/vurowobod.pdf
    • http://drivelifewild.com/uploads/1/3/0/5/130543364/3459904.pdf
    • http://nvintl.com/uploads/1/3/0/5/130588277/rukadodezusejen.pdf
    • http://www.roman-accounting.com/uploads/1/3/0/7/130740213/kesomujifilu_wubetize.pdf
    • http://allbimchile.com/uploads/1/3/0/8/130873921/fedub.pdf
    • http://aysenurguler.com/uploads/1/3/0/8/130813831/4886609.pdf
    • http://davisdesigns307.com/uploads/1/3/0/7/130776864/mipoxela.pdf
    • http://74-123-73-55.mgwnet.com/uploads/1/3/0/4/130436037/130436037.html#destination+b1+b2+c1+c2

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005baa.bin
27aad4e7100ae85831cc1a9cf4859e84521ff6b1ee9ac199fa10e6c4d4b25dad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BAA 2736 bytes
font_01_sfnt_off00006732.bin
e3bccd1ee1d5398c5227b099a4ebe29b9768b43ba086c654471218cb19d27daa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6732 26892 bytes
font_02_sfnt_off00008cda.bin
0a08cdb2b2bdbd6e251f239b109b4335736acd50bd8d7a6cde6033708cf4e767		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CDA 12360 bytes

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