Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0c7d10b749ac5b5…

MALICIOUS

PDF

58.7 KB Authoring application: Adobe PDF Library 9.0
MD5: 19129fa9d4ce4447933fc052c89d5259 SHA-1: 8538c1353baf2a68250704e55d99423415c1eb71 SHA-256: c0c7d10b749ac5b5a54056b7a93e88a02495b84f7da3b845251e79aeada4470c
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to redirect users to malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The embedded URLs are the primary IOCs, suggesting a redirection or phishing campaign.

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://mindyourbodyfitnessandnutrition.com/uploads/1/3/0/4/130483348/nodigafa.pdf
    • http://balabiottpisa.com/uploads/1/3/0/6/130620871/9942700.pdf
    • http://5j665.dtmgt.com/uploads/1/3/0/6/130620846/direre.pdf
    • http://northamericancontinent.com/uploads/1/3/0/7/130738974/rovafupimax.pdf
    • http://www.akenz.designpreviewer.com/uploads/1/3/0/6/130640235/0f53e2ffa844.pdf
    • http://notyetapparel.com/uploads/1/3/0/7/130738620/9028226.pdf
    • http://brisbaneblonde.com/uploads/1/3/0/4/130489800/7395376.pdf
    • http://nypdvolleyball.com/uploads/1/3/0/6/130604561/cedac9.pdf
    • http://www.thecornerstorepdx.com/uploads/1/3/0/6/130621333/gafovuf.pdf
    • http://calicleaningservicesllc.com/uploads/1/3/0/6/130639028/dabewusojo.pdf
    • http://casitaencanta.com/uploads/1/3/0/4/130492963/vukus_jetomoza_joniruvu.pdf
    • http://assistensepay.live/uploads/1/3/0/7/130738596/galavewuwo.pdf
    • http://byt5a.bpmtc.com/uploads/1/3/0/5/130589131/130589131.html#relative+clauses+yds+test+pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000115f.bin
46096adf79d54f1f01440809cf1737697bf49c76f4a13f6b30d00af1877eefb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115F 8552 bytes
font_01_sfnt_off00009805.bin
0f23141ba94d37b49c53016ac63a9b008a6ac8e4c4656a8d80e6725f77750189		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9805 16140 bytes

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