Malicious PDF — malware analysis report

Static analysis result for SHA-256 cee5aab75ceecdf1…

MALICIOUS

PDF

33.9 KB Authoring application: PDF Studio
MD5: 985860da5994a8b1450ac2993d9a5ed1 SHA-1: 51da7f0a27d4b91d48c6fbb0c2cf6ce8e5292d12 SHA-256: cee5aab75ceecdf1e9d717f8477dda9952b899442c05e4e3c8b7d985692f1455
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many with numeric or book-like slugs, indicative of a link farm designed to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly suggest malicious intent. The primary attack pattern involves redirecting users to a network of compromised websites hosting further malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://christinacarnesphotography.com/uploads/1/3/0/3/130379051/fadob-bugigosedexok-tabemazituxeva-dumutisida.pdf
    • http://juneaudining.com/uploads/1/3/0/7/130739991/vitepule.pdf
    • http://lapuertadelsolshop.com/uploads/1/3/0/6/130621495/fafozulaw-wenubug-domut.pdf
    • http://www.everesthunt.ca/uploads/1/3/0/3/130313368/rerutu_bipekodusizif_lovojabipejepa_pisovozora.pdf
    • http://www.grwcreative.com/uploads/1/3/0/5/130589094/16c44675c168dfe.pdf
    • http://citypubinfo.com/uploads/1/3/0/3/130313103/8861422.pdf
    • http://55florida.com/uploads/1/3/0/4/130488542/zosilolirupowife.pdf
    • http://activatemelbourne.com.au/uploads/1/3/0/6/130620804/keriximixiwugamopez.pdf
    • http://saintaidansfestival.co.uk/uploads/1/3/0/2/130287553/7763388.pdf
    • http://charlottejackman.com/uploads/1/3/0/6/130621003/fobunivineg_luwakoweke_semijerolijaj.pdf
    • http://bassittdesigns.com/uploads/1/3/0/3/130323401/8f42926189c.pdf
    • http://cpanel.collegedemsatiu.com/uploads/1/3/0/5/130588151/130588151.html#south+america+blank+map+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002bf1.bin
63c020a73e1c9a8b99f40cb81c38ec335154ca42651ee625d192a58664c76aa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF1 8304 bytes

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