Malicious PDF — malware analysis report

Static analysis result for SHA-256 de5e2093083b5d9b…

MALICIOUS

PDF

40.6 KB Authoring application: ImageMagick
MD5: 1e59eaf0483983bd9b83aa88474bac59 SHA-1: 6fcf6b564788a0d33531a61c3835b1d2fa62e381 SHA-256: de5e2093083b5d9b40cecf5a7e33a86dfa5ebf505f5f7d8661bd0384956863a7
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection tactic. ClamAV detected this as Pdf.Phishing.TtraffRobotInstall-7605656-0, and an ML classifier also flagged it as malicious. The embedded URLs are likely used to distribute further malicious content or for SEO manipulation. 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://brownfencing.com/uploads/1/3/0/4/130489346/gikasajofafuxe-jededofugi-xidenafek.pdf
    • http://safecitysecurity.com/uploads/1/3/0/5/130543210/gukifu.pdf
    • http://thehighlandshollywood.org/uploads/1/3/0/5/130589007/5e41c563.pdf
    • http://e-wco.com/uploads/1/3/0/6/130604078/4979703.pdf
    • http://dejifeso.strongysha.xyz/uploads/2020/01/27/3677371.pdf
    • http://restaurantatburdicks.com/uploads/1/3/0/6/130620778/5932903.pdf
    • http://dartistessalon.com/uploads/1/3/0/2/130287246/7836642.pdf
    • http://drainetfissures.com/uploads/1/3/0/5/130588567/3514870.pdf
    • http://slaveda.com/uploads/2020/01/27/bibapab_gekifaruvexil.pdf
    • http://coltsound.com/uploads/1/3/0/6/130621588/dipof.pdf
    • http://actionzerousa.org/uploads/1/3/0/2/130289467/07f7b21e671bb6d.pdf
    • http://tofubox.shop/uploads/1/3/0/5/130589133/3847394.pdf
    • http://theoperapreneur.com/uploads/1/3/0/6/130621201/kejutedurajasiligowo.pdf
    • http://moco-bay.com/uploads/1/3/0/5/130550972/vedekotof.pdf
    • http://antesana.weebly.com/uploads/1/3/0/6/130639363/5368ae6fdeac5.pdf
    • http://cienaraenelson.com/uploads/1/3/0/4/130483906/naxetigeja_vexelofeb_memozoxeseveki.pdf
    • http://bux.troitsa-ld.ru/uploads/2020/01/27/samudebur.pdf
    • http://projecthomestead.us/uploads/1/3/0/5/130539479/6024160.pdf
    • http://kamconsulting.fr/uploads/1/3/0/2/130289565/130289565.html#electric+renewable+energy+systems+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001505.bin
740616f82640c82ec87c584312305909b7046839e4e1e9006050a4eadbb1efa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1505 8516 bytes

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