Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb528132c90b5c55…

MALICIOUS

PDF

38.1 KB Authoring application: Serif PagePlus
MD5: e3ae3bd74db1ffd4aed956094a992a2d SHA-1: 2891c84a836eb5d56f2c634cf101131a6b35a234 SHA-256: fb528132c90b5c551effb5969163aba487ac1ec3f9870118fda3143b3fe09714
152 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score strongly indicate malicious intent. The embedded URLs point to various domains, suggesting a link farm designed to distribute or host further malicious content.

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://www.flaketutoring.com/uploads/1/3/0/8/130813804/suvegupa.pdf
    • http://summaarquirectura.com/uploads/1/3/0/5/130542769/zipasenuxolep.pdf
    • http://mrgilladvice.com/uploads/1/3/0/5/130588651/4230015.pdf
    • http://locksmithracine.com/uploads/1/3/0/6/130639781/7493610.pdf
    • http://gajon.info/uploads/1/3/0/4/130435787/1c9d610f51f86.pdf
    • http://www.funbuzzonline.com/uploads/1/3/0/6/130639984/3512136.pdf
    • http://checksymptom.com/uploads/1/3/0/6/130603891/terevojif-vupapef-bevegujuwot.pdf
    • http://obryantdesignscapesllc.com/uploads/1/3/0/5/130588733/1172098.pdf
    • http://trikli.com/uploads/1/3/0/9/130969298/puwotix.pdf
    • http://naiadenorthamerica.com/uploads/1/3/0/2/130270813/3144437.pdf
    • http://duojonssoncoudroy.com/uploads/1/3/0/8/130814830/09ac4003a8bb.pdf
    • http://truckwingsdev.com/uploads/1/3/0/5/130540869/4b8be425de47.pdf
    • http://michaelaaftonjones.com/uploads/1/3/0/6/130604434/giwanevo.pdf
    • http://theswitches.com/uploads/1/3/0/6/130639436/1166905.pdf
    • http://ledgrowlightsformarijuana.org/uploads/1/3/0/4/130488914/3042257.pdf
    • http://solairforce.net/uploads/1/3/0/5/130540507/3988226.pdf
    • http://mistykwilliams.com/uploads/1/3/0/3/130379894/gopidetulatisa.pdf
    • http://deannapaulsen.com/uploads/1/3/0/6/130621309/3663632.pdf
    • http://lytness.com/uploads/1/3/0/5/130540868/wemiwategiz.pdf
    • http://sportsmed1.com/uploads/1/3/0/7/130739239/2b6eebcf47687.pdf
    • http://www.cormansecurity.com/uploads/1/3/0/4/130435722/falaxakevipi.pdf
    • http://lafayette-westlafayette.info/uploads/1/3/0/4/130488500/774b130f.pdf
    • http://mariana-test.devsite-1.com/uploads/1/3/0/4/130436166/130436166.html#bsc+horticulture+agrimoon

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003314.bin
a6f36437fa7d4b0385e48b35c14b58ccbb4b9e4791cf8e61116cad7978c8bde4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3314 8096 bytes

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