Malicious PDF — malware analysis report

Static analysis result for SHA-256 02f96cb81ce3df16…

MALICIOUS

PDF

37.0 KB Authoring application: Serif PagePlus
MD5: 83eff39fb921819c26b933b6a7ea87bd SHA-1: 6fb3340ea4d114f84eea780ea4d4fc12f6a0dbed SHA-256: 02f96cb81ce3df16081ceb8c3fa2db4aadabb6c32351faf968fcb85da1e50104
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a mass external link farm, with multiple URLs pointing to other PDF files, suggesting a phishing or SEO spam campaign. The document body also contains a lure for a "Free serial number for adobe acrobat 9 pro extended", which is likely a pretext to encourage users to click the malicious links. The ClamAV detection and ML classifier further support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://scottbrackenridgebuilders.co.nz/uploads/1/3/0/6/130621211/rulike_majowajupob_lujurawalul.pdf
    • http://cultureconciergeonline.com/uploads/1/3/0/6/130605041/8017378.pdf
    • http://oreade.ch/uploads/1/3/0/3/130323449/3600680.pdf
    • http://fixedalready.org/uploads/1/3/0/7/130738487/9058696.pdf
    • http://lovelifeagain-lifecoachingmore.com/uploads/1/3/0/2/130271245/lutedabu-tawim.pdf
    • http://informacionyturismo.net/uploads/1/3/0/6/130605498/2316323.pdf
    • http://sontimes.org/uploads/1/3/0/5/130539218/6699e40.pdf
    • http://kristyrackham.com/uploads/1/3/0/6/130603882/3371948.pdf
    • http://thatanimalgroup.org/uploads/1/3/0/2/130270945/1030014.pdf
    • http://myentouragemusic.com/uploads/1/3/0/5/130545021/130545021.html#free+serial+number+for+adobe+acrobat+9+pro+extended

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001213.bin
2876fa3c93856710166866259613afb544c1e6a5445f5ecc000e55ba412929fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1213 8388 bytes

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