Malicious PDF — malware analysis report

Static analysis result for SHA-256 04ab1f9f86913596…

MALICIOUS

PDF

36.2 KB Authoring application: Solid Converter PDF
MD5: f475e9898c368808f6d7388beccb0f5b SHA-1: 2d36c435ffa111fc45a7746734ca6fd22b610877 SHA-256: 04ab1f9f86913596a2b528822f2de5de952ef5acddd7d743765ede769420a8ab
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for phishing or distributing further malware. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure itself facilitates the redirection to these numerous external URLs.

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://bostoncontracting.store/uploads/1/3/0/8/130813612/tonamu-gelavif-voguwizufiru-zodawonesani.pdf
    • http://andrew-gustafson.com/uploads/1/3/0/6/130604771/8768122.pdf
    • http://mycasasale.com/uploads/1/3/0/7/130739082/torikuvufuraj_robamaxejawa_vesoze.pdf
    • http://pauleast.net/uploads/1/3/0/4/130483397/8098a2.pdf
    • http://tnconcealedcarry.com/uploads/1/3/0/4/130488370/9468973.pdf
    • http://mindstate.store/uploads/1/3/0/3/130323260/2036297.pdf
    • http://orabaumanagementgmbh.ch/uploads/1/3/0/8/130813786/vivazufitog.pdf
    • http://mta-sts.mail.rocoveryfitness.net/uploads/1/3/0/8/130814219/2268322.pdf
    • http://www.alexhallahan.com/uploads/1/3/0/5/130588328/83233e.pdf
    • http://visionary-affairs.com/uploads/1/3/0/7/130776221/bf581495a7.pdf
    • http://lasfloresdeloisan.com/uploads/1/3/0/2/130289695/948288.pdf
    • http://andrew-cash.com/uploads/1/3/0/7/130775295/4ef81405be479.pdf
    • http://nemajav.com/uploads/1/3/0/9/130969573/busujugirig.pdf
    • http://matthew633.net/uploads/1/3/0/5/130590467/fivopu_depobumawenafi_wonigupelaraz_zelexoj.pdf
    • http://foothillsbiblefellowship.com/uploads/1/3/0/6/130620251/130620251.html#linux+command+line+ldap+query+tool
    • http://hostmaster.tandme.co.uk/uploads/1/3/0/3/130323588/wibararel-xewukume-zofufiv.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000339a.bin
751b42142636cd3869e648083258e4003a45a3695057dd757663f1a716629dbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x339A 7608 bytes

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