Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a0688dc3377a7a3…

MALICIOUS

PDF

36.0 KB Authoring application: LibreOffice
MD5: 28f9402e5bfd1a1311407b8c89f44752 SHA-1: 1f05548e564d0d962b655c1a86724b8692511800 SHA-256: 7a0688dc3377a7a3e1b3eefd233876b98acfaf17aef01753f334df635fa2fcce
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique commonly used for SEO poisoning or phishing. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The embedded URLs likely lead to further malicious content or phishing pages.

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://petshopmiabob.club/uploads/1/3/0/2/130291531/bofuniwejefaz_bewafewani.pdf
    • http://cidadegoias.com/uploads/1/3/0/5/130590482/pokatadogo.pdf
    • http://brownwoodhealthdepartment.com/uploads/1/3/0/6/130620782/9848888.pdf
    • http://mail.notalucascoaching.com/uploads/1/3/0/6/130620505/relevetevug.pdf
    • http://updatededucator.com/uploads/1/3/0/9/130969591/0896183298e5.pdf
    • http://elitelawncare.org/uploads/1/3/0/5/130590613/letadipavipame.pdf
    • http://yourfurbaby.com/uploads/1/3/0/5/130589163/c0863fa9a26cdc.pdf
    • http://teachinggeographybusinesscommerceaustralia.com/uploads/1/3/0/7/130775542/sodusimimukedo.pdf
    • http://livingriverchurch.net/uploads/1/3/0/4/130435850/c82f5.pdf
    • http://www.newlifefrostburg.com/uploads/1/3/0/7/130739628/1250529.pdf
    • http://muffettakrueger.com/uploads/1/3/0/8/130814030/kadatev-nebasenem.pdf
    • http://lucykatecrafts.com/uploads/1/3/0/7/130740443/leterosotawuv.pdf
    • http://photos-by-neill.com/uploads/1/3/0/6/130639554/5728579.pdf
    • http://vacuumroomba.com/uploads/1/3/0/3/130379488/powigilaf.pdf
    • http://www.thelyffoundation.org/uploads/1/3/0/8/130814100/1708370.pdf
    • http://ourlibertypark.net/uploads/1/3/0/4/130489371/8a3b4d47c8b2.pdf
    • http://baomahuiyulechengkaihu.br3h.com/uploads/1/3/0/5/130551618/130551618.html#child+belly+pain+at+night

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003354.bin
c46c68bfafd2f7e16700cb80452c1df1e2be13cb8d431b809f4e8253a582775a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3354 7088 bytes

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