Malicious PDF — malware analysis report

Static analysis result for SHA-256 1777bac5c95ecf5d…

MALICIOUS

PDF

35.3 KB Authoring application: Nitro PDF
MD5: 00a0652fa041b1f8ec86415493b2d57b SHA-1: df68bd239a83ee4f767f76cf1f42c868239965d7 SHA-256: 1777bac5c95ecf5d111f79f79ad56def5297075f29bd237a5546569dfaffdded
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection scheme. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The embedded URLs are likely used to direct users to malicious sites or to manipulate search engine rankings.

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://mywinningkidsseftworth.com/uploads/1/3/0/8/130815381/redexusejenosoziv.pdf
    • http://cranecrews.com/uploads/1/3/0/7/130740113/8e5c04.pdf
    • http://myslotweb.com/uploads/1/3/0/5/130588307/filibon.pdf
    • http://consultoriasrojas.com/uploads/1/3/0/4/130436222/damid.pdf
    • http://maxineworthy.com/uploads/1/3/0/6/130605078/6305841.pdf
    • http://aurasalontn.com/uploads/1/3/0/5/130589252/kaxidobobadato_vokaxowuporu.pdf
    • http://miltonrtrice.com/uploads/1/3/0/2/130271073/dirida-petinazopomase.pdf
    • http://woooah.shop/uploads/1/3/0/7/130775516/dudokom-viketinerono.pdf
    • http://kswinehk.com/uploads/1/3/0/5/130551014/3166c312b332129.pdf
    • http://myownbank.co.uk/uploads/1/3/0/6/130639966/1128639.pdf
    • http://nfloo.com/uploads/1/3/0/6/130621283/7439327.pdf
    • http://dancetodaybiz.com/uploads/1/3/0/3/130313120/tavusigabiwumo.pdf
    • http://type1cyborg.jacquelineclewis.com/uploads/1/3/0/7/130738629/130738629.html#ascites+treatment+in+patanjali

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030e9.bin
3bba10e18def13f4c138bfda5646bffc6c26f3d285aeda4b5705ab8095f4674b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30E9 8600 bytes

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