Malicious PDF — malware analysis report

Static analysis result for SHA-256 89a5868647080427…

MALICIOUS

PDF

38.4 KB Authoring application: Pdftk
MD5: 5bdc9d9fbadd54efca64301018c788bf SHA-1: 30234c9c7b28ccd0339fb1e031d43c7f93c32772 SHA-256: 89a5868647080427a71aaad5a66a9c1594b810a66e83225385a6e936893f2181
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF file contains a large number of embedded URLs pointing to other PDF files, indicating a link farm or a distribution mechanism for further content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the sheer volume of external links is highly suspicious.

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://bfslyc.org.uk/uploads/1/3/0/4/130478551/gomatatepenivo_vitidasopo_fixatuwe_sisolede.pdf
    • http://fivethirteenfree.com/uploads/1/3/0/3/130312916/jivof.pdf
    • http://nakomaplumas.com/uploads/1/3/0/5/130588203/tugobil.pdf
    • http://socalseas.com/uploads/1/3/0/6/130639814/misanepafitigot_bomulivewulasu.pdf
    • http://kylejustin.net/uploads/1/3/0/6/130605036/7613091e1b0.pdf
    • http://arrested-jreubenlong.com/uploads/1/3/0/6/130604077/8971152.pdf
    • http://mohammadshehataactor.com/uploads/1/3/0/2/130288462/6434049.pdf
    • http://stillhangry.com/uploads/1/3/0/2/130270747/8f4998ea9beea.pdf
    • http://spanishin20lessons.com/uploads/1/3/0/6/130640125/xaregavapixerew-legarokavobumim.pdf
    • http://synergysoundltd.com/uploads/1/3/0/4/130491488/rejoje.pdf
    • http://aandnlawn.com/uploads/1/3/0/5/130590738/3a8080f2fa7f.pdf
    • http://beadmesilly.com/uploads/1/3/0/5/130588839/vuxapa.pdf
    • http://www.33111northwoodcircle.com/uploads/1/3/0/7/130738578/lixivevezobavep_pexiwu_gedop_pigewek.pdf
    • http://seizediem.com/uploads/1/3/0/7/130775328/lexeguwuxujerupifav.pdf
    • http://geek-ishthings.com/uploads/1/3/0/5/130588821/9ae8c24.pdf
    • http://sphemporium.com/uploads/1/3/0/3/130323523/9f6be0a31.pdf
    • http://uintahonlinek8.com/uploads/1/3/0/6/130621587/gifexikefuriwa-pubaragozuxat-kanis.pdf
    • http://kmajzoub.com/uploads/1/3/0/2/130272905/66b3ed95.pdf
    • http://entrepedia.org/uploads/1/3/0/6/130621137/jogepavilol.pdf
    • http://preseht.com/uploads/1/3/0/6/130620877/widuzekaze-xijinonazisi-getedaxubax-dalujirawenate.pdf
    • http://colibot.com/uploads/1/3/0/2/130271072/jurule_jatimovib_vududi_takat.pdf
    • http://lamee-dark-version3-de.devsite-1.com/uploads/1/3/0/8/130874325/130874325.html#steelseries+arctis+7+ps4+chat+volume

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003364.bin
264288dfc98f3f67c92e7b1cf2334beb044126d71c8e60d05a1280aee27966bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3364 8596 bytes

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