Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e790efb62faccdd…

MALICIOUS

PDF

39.5 KB Authoring application: PDFedit
MD5: 66aa28d178e1af0135f56e0ac54a7d8e SHA-1: 1799ade7f1be95c87a36f436fce0d6d48dec1449 SHA-256: 0e790efb62faccdd61b8f3329e11c46a0a0b51379408d171b96d87aaba0b17ef
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO spam or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, classifying it as Pdf.Phishing.TtraffRobotInstall. No scripts were extracted, but the sheer volume of outbound links suggests a coordinated effort to redirect users. The document body itself is heavily corrupted and unreadable.

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://perfilelearning.net/uploads/1/3/0/6/130621406/6179521.pdf
    • http://diamondmuscle.com/uploads/1/3/0/4/130483305/43235908a914e0e.pdf
    • http://plutonemprise.com/uploads/1/3/0/2/130288448/6b0972843e344.pdf
    • http://portableoxygen.us/uploads/1/3/0/2/130270826/mofotibigofi.pdf
    • http://twocities.net/uploads/1/3/0/2/130272344/suvuwobevif.pdf
    • http://mta-sts.linlithgowscdc.org/uploads/1/3/0/4/130489437/5899063.pdf
    • http://www.dhamshirts.com/uploads/1/3/0/2/130291673/7556790.pdf
    • http://myjandj.com/uploads/1/3/0/8/130874136/vuludo.pdf
    • http://www.thegardenresidencesdeveloper.com/uploads/1/3/0/7/130775167/fa716.pdf
    • http://www.dead-vapors.com/uploads/1/3/0/5/130551247/nimidewiweji.pdf
    • http://datacenterdan.com/uploads/1/3/0/6/130621746/wufofarokagukeperuz.pdf
    • http://sa-machine-learning.org/uploads/1/3/0/7/130740211/getip.pdf
    • http://www.atltid.com/uploads/1/3/0/5/130551325/1909633.pdf
    • http://3southernsisters.com/uploads/1/3/0/2/130289458/e4cb3a0f8b.pdf
    • http://nora-davis.net/uploads/1/3/0/2/130274024/819795.pdf
    • http://winczok.com/uploads/1/3/0/8/130874247/vanorugiziw.pdf
    • http://www.omniatantric.com/uploads/1/3/0/7/130776233/e9814cbef52ef.pdf
    • http://bluesmokeband.com/uploads/1/3/0/7/130738647/04a972b8.pdf
    • http://banginhardfireworks.com/uploads/1/3/0/8/130814288/wagamekeweb.pdf
    • http://beverly-curry.pleasingfood.com/uploads/1/3/0/5/130550827/130550827.html#how+to+massage+abdomen+for+constipation

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003da0.bin
8a6ec621bb945aded4a0147e78dee45c03fe423b41de45769908c23ac1c25eb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3DA0 7416 bytes

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