Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fc76d72adff4ac0…

MALICIOUS

PDF

32.7 KB Authoring application: GIMP
MD5: f1f061e6cda5a24b6e8231e4140d2504 SHA-1: 015651e5fdc14e6401dc5337c7b54c25bef61a6d SHA-256: 8fc76d72adff4ac0fc44fb0f1a9a14f4d571e8443cfd6955278be67f73a64159
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The primary URL, http://msmaley.com/uploads/1/3/0/4/130476053/zazerexo.pdf, is the most suspicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://msmaley.com/uploads/1/3/0/4/130476053/zazerexo.pdf
    • http://leachfamilyfarms.weebly.com/uploads/1/3/0/6/130620428/kajurisijofoji.pdf
    • http://kidsanimalsplants.com/uploads/1/3/0/3/130379407/fasinogogova.pdf
    • http://aikuisennaisenkauneus.com/uploads/1/3/0/5/130539034/mubafelasefekugin.pdf
    • http://shopewa.info/uploads/2020/01/29/8387dbd794959.pdf
    • https://losovufuxidi.weebly.com/uploads/1/3/0/4/130435771/97052.pdf
    • http://mikepaulphoto.weebly.com/uploads/1/3/0/5/130590296/vijusorokowutitilexo.pdf
    • http://rqtrucking.com/uploads/1/3/0/5/130541803/rorawifugi.pdf
    • http://thepropertycoach.club/uploads/1/3/0/3/130379575/xibikol.pdf
    • http://narvaezabogados.com/uploads/1/3/0/6/130604850/130604850.html#auditoria+interna+y+externa+libro+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001204.bin
4fe443f3babfef56d6a8b9ea6f9f685941bc2a6000fccd1dcf0b5bcbe155a88e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1204 8524 bytes

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