Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b1689c03613457a…

MALICIOUS

PDF

43.4 KB Authoring application: GIMP
MD5: e57bfc9db23952547cff50462412c557 SHA-1: 1142925fe8e30bde7a073313dce57d5c3146db32 SHA-256: 9b1689c03613457ad65205c1937d0153d2ad0dc093a0aea8a45d988e72466e7d
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO spam or to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. No scripts were extracted from this sample, but the sheer volume of outbound links suggests a coordinated effort to distribute content or lure victims.

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://casadeshenandoah.com/uploads/1/3/0/4/130491699/f3b8d3942b1425.pdf
    • http://renownedvisionariesunited.world/uploads/1/3/0/6/130604996/4392573.pdf
    • http://nwintegrativeprimarycare.com/uploads/1/3/0/5/130547112/likudepibinub.pdf
    • http://nesapublications.com/uploads/1/3/0/4/130483207/25591caec56f1f2.pdf
    • http://connect.barandudacommunitychurch.org/uploads/1/3/0/4/130436458/vigepexekas_pukatedabotim.pdf
    • http://crystalwittenutrition.com/uploads/1/3/0/6/130621353/lumudi.pdf
    • http://usdoj.info/uploads/1/3/0/3/130323620/fivemawemisuz.pdf
    • http://dcdinspecciones.com/uploads/2020/01/28/ninemoxifefe.pdf
    • http://regalamiamusic.com/uploads/1/3/0/5/130588833/pijijamu.pdf
    • http://bfhsmateski.weebly.com/uploads/1/3/0/6/130639175/6559fcf86fe237.pdf
    • http://pulleyautoparts.com/uploads/1/3/0/2/130288502/xinosazixoxepuk-xuzuvodozeme-xutafole-miwebuguta.pdf
    • http://rcspecializedagencies.org/uploads/1/3/0/2/130289658/ziduxuvotu-pafori.pdf
    • http://dancinggoatsanctuary.com/uploads/1/3/0/5/130551859/130551859.html#android+device+manager+cannot+locate+my+phone

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013cc.bin
4804e7f27afb067246fa84b847641146d212ece44d240875fa2bd260ff986cf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13CC 8236 bytes

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