Malicious PDF — malware analysis report

Static analysis result for SHA-256 92a58ea57c4b339f…

MALICIOUS

PDF

35.8 KB Authoring application: Pdftk
MD5: 1d455c20803a1992496826025f5616c2 SHA-1: ecdb67f06d3023cb807f7b9de8fb26198bb4e196 SHA-256: 92a58ea57c4b339f3794afaaf5fab35428078ef97ca74bcaf28c2f954b7e1676
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents, a technique commonly used for SEO manipulation or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the critical heuristic 'PDF_SEO_LINK_FARM' strongly indicate a malicious intent to redirect users. No scripts were extracted from this sample.

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://hostmaster.wholehi.com/uploads/1/3/0/6/130604537/3213972.pdf
    • http://scf-token-info.com/uploads/1/3/0/8/130874674/moneruzutinizenirof.pdf
    • http://artekcm.com/uploads/1/3/0/6/130640039/17bd41c9c7c85.pdf
    • http://lubatales.com/uploads/1/3/0/5/130550971/4376617.pdf
    • http://remarkablecanine.com/uploads/1/3/0/2/130271049/7806623.pdf
    • http://onlinesportsbettingsites.net/uploads/1/3/0/3/130313230/646832.pdf
    • http://www.mentalconditioningmovement.com/uploads/1/3/0/7/130776077/8014507.pdf
    • http://iecep-bataan.com/uploads/1/3/0/7/130739956/torogaviwa.pdf
    • http://prouni2024.com/uploads/1/3/0/5/130551604/2ebe7.pdf
    • http://empowerme2win.com/uploads/1/3/0/2/130270895/3467731.pdf
    • http://indiabygrace.com/uploads/1/3/0/4/130490719/dajevazesuvovol_fukamimana.pdf
    • http://kylebragger.net/uploads/1/3/0/5/130539783/80b01396edc694a.pdf
    • http://gaycbrinson.com/uploads/1/3/0/6/130605501/cfacafa55e4a156.pdf
    • http://law7ati.com/uploads/1/3/0/6/130639356/dokavulutep-giselawogab-kebudotorelawe-doluz.pdf
    • http://74-123-77-103.mgwnet.com/uploads/1/3/0/2/130289589/130289589.html#abolition+of+the+slave+trade+in+britain
    • http://law7ati.com/uploads/1/3/0/6/130639356/dokavulutep-giselawogab-kebudotorel

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003278.bin
6b4ad977d4fdc4fb308e3f9b6a7c6cf70652028dc01411ac49bfac91a5e2e2a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3278 7776 bytes

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