Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b9ef7641337b213…

MALICIOUS

PDF

40.0 KB Authoring application: Nitro PDF
MD5: 49ac3a6f36f8e0b018cfcc80265ec1d4 SHA-1: d7cd19b44f3b9fffe53ce0147c19044f8d92e1f0 SHA-256: 3b9ef7641337b213952b730b43fc548f2fc3baf6ec049c74180096e8687d2e35
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, a technique commonly used for SEO poisoning or phishing. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly suggests a phishing intent. The document body, though heavily obfuscated, appears to be a lure related to back pain, which is a common tactic to entice users to click on malicious links. No scripts were extracted from this sample.

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://moteisweb.com/uploads/1/3/0/5/130539297/2583104.pdf
    • http://bf6010.eliteedu.org/uploads/1/3/0/3/130379246/2eb28c55c18.pdf
    • http://www.thebakinghouse.co.uk/uploads/1/3/0/2/130271154/gizuvosonagom.pdf
    • http://globalgraphicdesigns.com/uploads/1/3/0/4/130476378/feveb.pdf
    • http://urbanmintbtq.com/uploads/1/3/0/4/130476427/patupo-wunerol-gafibize-powapesotud.pdf
    • http://omgholidaydesign.com/uploads/1/3/0/4/130488382/7037722.pdf
    • http://michaelavolicino.com/uploads/1/3/0/4/130477351/86f7ea2a6ba5.pdf
    • http://mychickenman.com/uploads/1/3/0/7/130776401/dirawudizewije_maxuse.pdf
    • http://growingupitalianaustralian.com/uploads/1/3/0/7/130775341/5971586.pdf
    • http://prosurfaceinstall.com/uploads/1/3/0/2/130289618/1fdce.pdf
    • http://dedicated-20.pleasingfood.com/uploads/1/3/0/5/130588288/130588288.html#how+do+you+treat+a+bulging+disc+in+your+lower+back

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004601.bin
6a718d1224be20691c59908607f3008d4696f871bcca7ca28a69dc086697c056		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4601 8220 bytes

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