Malicious PDF — malware analysis report

Static analysis result for SHA-256 0527230cb064068e…

MALICIOUS

PDF

36.5 KB Authoring application: PDFedit
MD5: 3a475da630afc4a8c06d43e344f7faea SHA-1: deb8a37a470d16d16f3a6634c5d8843359054323 SHA-256: 0527230cb064068e6afbdfc94c94547bd25311397269229de3822f4c448cf370
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a phishing or content distribution vector.

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://radarx.org/uploads/1/3/0/2/130274322/540423.pdf
    • http://jamesbrown4judge.com/uploads/1/3/0/6/130639966/nopojeropini_jizimepuj.pdf
    • http://rosshavenglass.com/uploads/1/3/0/6/130639423/xavojebi.pdf
    • http://healthandsafetytrainingni.com/uploads/1/3/0/9/130969059/piwavud.pdf
    • http://keatonscottphotography.com/uploads/1/3/0/3/130312929/fetubedumof.pdf
    • http://urbancampusresources.com/uploads/1/3/0/6/130604140/83ae0.pdf
    • http://ackoeltechniek.nl/uploads/1/3/0/2/130287847/386869.pdf
    • http://beastfriendz.com/uploads/1/3/0/5/130539354/wozekobezuzidob_mugopifupozones_mewafakupulaxu.pdf
    • http://floydfx.com/uploads/1/3/0/4/130483911/7019603.pdf
    • http://thisweeksbestdeals.com/uploads/1/3/0/5/130539645/24443d4372b3305.pdf
    • http://brisbanefloatandmassage.com.au/uploads/1/3/0/5/130590195/dawaxoxok.pdf
    • http://ehkhoo.com/uploads/1/3/0/7/130775308/89ff61.pdf
    • http://mochasandjavas.net/uploads/1/3/0/7/130776754/9854465.pdf
    • http://finefinishingconsultingllc.com/uploads/1/3/0/2/130272945/130272945.html#exercicios+sobre+anel%C3%ADdeos+e+moluscos+7+ano

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034ed.bin
37ae769c0e2200c8fcba4f2d3bd35770c5d5c7cb78d8e09ca80b1aa8cf87fbf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x34ED 9604 bytes

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