Malicious PDF — malware analysis report

Static analysis result for SHA-256 5de89429471e42a6…

MALICIOUS

PDF

34.5 KB Authoring application: PDFedit
MD5: 0ee995550dd0714522fc2ccd4b68f17a SHA-1: 8897a411b8388a50e184755f50b45c244d1f7639 SHA-256: 5de89429471e42a6e65c12899120ba95ab8f950f1a3c78f5ec51329eba034786
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the heuristic 'PDF_SEO_LINK_FARM' points to a deliberate effort to host numerous malicious or deceptive documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://www.thetreasureshack1234.com/uploads/1/3/0/7/130776176/2351250.pdf
    • http://skwilliamslaw.com/uploads/1/3/0/4/130435578/kapefuvidomizifukud.pdf
    • http://topendtour.com.au/uploads/1/3/0/7/130739509/zejatuz.pdf
    • http://bluhorizontravel.com/uploads/1/3/0/3/130323097/wubakevi-xozamizaxupuj-samusek-mopuze.pdf
    • http://stebemusic.com/uploads/1/3/0/3/130324092/tijurexegikola.pdf
    • http://columbinecabinsco.com/uploads/1/3/0/3/130323423/882d13411fcc4a4.pdf
    • http://msmarmenia.org/uploads/1/3/0/3/130313339/2197582.pdf
    • http://rebooting.org/uploads/1/3/0/7/130739993/7200973.pdf
    • http://wirelessthreats.org/uploads/1/3/0/5/130589411/b0816.pdf
    • http://mail.longfellowpta.org/uploads/1/3/0/6/130640116/4e6b2d5733db62a.pdf
    • http://carolinaeast.ca/uploads/1/3/0/5/130539090/lerorobevi.pdf
    • http://74-123-79-230.mgwnet.com/uploads/1/3/0/5/130539843/130539843.html#front+office+duty+manager+resume

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002efb.bin
7554d277a483a6a408b4504097a7fa7ccff23ea2d1d494b48a6903377a53ce3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EFB 8148 bytes

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