Malicious PDF — malware analysis report

Static analysis result for SHA-256 d111f7383b58cf4b…

MALICIOUS

PDF

45.8 KB Authoring application: QPDF
MD5: 28cf2afafcbab28f3cbd8cb909a49c2e SHA-1: a84bae536f682b6d1d06fb9e0a4db90707a99536 SHA-256: d111f7383b58cf4b663df21423f315342bc2e541c550027443580c3f184cb52e
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded URLs are likely part of a campaign to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://breathingzonetech.org/uploads/1/3/0/6/130620972/5377499.pdf
    • http://routardvirtuel.com/uploads/1/3/0/5/130541443/vawiranolotid_juloge.pdf
    • http://privettartgallery.net/uploads/1/3/0/4/130483819/4473522.pdf
    • http://redttube.net/uploads/1/3/0/7/130776795/femulasuleju-watuzolojovum-nupavaze-toxasivub.pdf
    • http://cocktailsexpress.com/uploads/1/3/0/7/130775275/5614994.pdf
    • http://ianburnleystudio.net/uploads/1/3/0/6/130639486/d79257e2704.pdf
    • http://realizationofdreams.com/uploads/1/3/0/2/130289482/38298a7ab944b36.pdf
    • http://640stonehouseln.com/uploads/1/3/0/6/130603819/dawokesugazema.pdf
    • http://bellamayphotography.com/uploads/1/3/0/7/130738921/09873480b6.pdf
    • http://shardexplorers.com/uploads/1/3/0/5/130543665/130543665.html#eagles+hotel+california+guitar+pro

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_001_off0000213a.bin
423b41be5c0ab8872f214184619421150d03c938b7d304ab7a82e14794a6c9fe		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x213A 19680 bytes
font_01_sfnt_off000042a1.bin
e7731843c6c6bdd67a9b37f40d8dbea0540ad31dc0d446a54278e12ae90d85a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42A1 8808 bytes

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