Malicious PDF — malware analysis report

Static analysis result for SHA-256 9efbdb326c0acbce…

MALICIOUS

PDF

38.0 KB Authoring application: ImageMagick
MD5: 205ffb0b7313fcd5bd7093bc9122f80c SHA-1: 338a4f806bc6f3196f813bda3f69c75c4463c06e SHA-256: 9efbdb326c0acbce73d66a3b02c240afc6c4b77933b2a2869fbb72c15fd0966d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The PDF_SEO_LINK_FARM heuristic indicates a large number of embedded URLs pointing to external PDF files, suggesting a link farm or a distribution mechanism for further malicious content. The presence of numerous unknown-reputation URLs reinforces this assessment.

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://bestbroadbandsupplier2019.co.uk/uploads/1/3/0/4/130483138/bodefixi.pdf
    • http://dogfriendlyrentalsonsanibel.com/uploads/1/3/0/3/130313306/sowag.pdf
    • http://chaletalpemassif.com/uploads/1/3/0/8/130814681/wikizakeluremanu.pdf
    • http://bkhouse.services/uploads/1/3/0/7/130739170/xofawe.pdf
    • http://monsieurbidule.com/uploads/1/3/0/8/130813730/defibez.pdf
    • http://ticaea.com/uploads/1/3/0/7/130739383/4239870.pdf
    • http://kenaifishingandlodging.com/uploads/1/3/0/6/130604597/2392594.pdf
    • http://bankownedhomesidaho.com/uploads/1/3/0/6/130603941/1ddccb4.pdf
    • http://purl.one/uploads/1/3/0/5/130589239/716270f5c5c.pdf
    • http://modpropmgmt.com/uploads/1/3/0/5/130551749/naruvenewi_sikozem.pdf
    • http://westshorewinebar.com/uploads/1/3/0/2/130291552/f313d5908d64b0d.pdf
    • http://www.scrivenerpress.com/uploads/1/3/0/3/130379272/322e7f70.pdf
    • http://gwyneiraetantonia.com/uploads/1/3/0/2/130274279/6073644.pdf
    • http://newtampatraillife.com/uploads/1/3/0/5/130551041/dutakerabubed_gapofometagume_gewomosin.pdf
    • http://www.secure-pof.com/uploads/1/3/0/6/130620537/130620537.html#aimpoint+golf+australia

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003b2b.bin
835149512921d14958fdb04e2e2c8618d463192f02b135c03c8782729d277585		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3B2B 7924 bytes

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