Malicious PDF — malware analysis report

Static analysis result for SHA-256 f070a65e4563abdc…

MALICIOUS

PDF

42.8 KB Authoring application: Inkscape
MD5: bd896f30feb825f89f100661d365eef3 SHA-1: 50681225293eb9dfa05518075945b407cf131002 SHA-256: f070a65e4563abdc9294fc1167cec25f30ebdfb773d2c55d86ef0fb9248597c9
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded URLs pointing to external PDF documents hosted on various domains. This technique is commonly 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.

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://machinegunrentals.net/uploads/1/3/0/6/130621052/7128273.pdf
    • http://lockedsecurestorage.com/uploads/1/3/0/3/130313120/nopafusebelop-zokadaf-kizefew-bivenemubibud.pdf
    • http://usarooterplumbing.com/uploads/1/3/0/6/130620704/4331565.pdf
    • http://ayp-houston.com/uploads/1/3/0/5/130543156/6678876.pdf
    • http://mapsoftheoldwest.com/uploads/1/3/0/5/130551270/475e0f4a.pdf
    • http://ministryofmixology.com/uploads/1/3/0/3/130379391/kawifilarerukokabi.pdf
    • http://narkolepsy.com/uploads/1/3/0/6/130621868/zalajowil.pdf
    • http://milwaukeetoireland.com/uploads/1/3/0/5/130551130/5883002.pdf
    • http://musicincorporation.com/uploads/1/3/0/6/130620840/2abb03ae5a21d3c.pdf
    • http://nabilaq.com/uploads/1/3/0/4/130476378/24b73a37322d8b.pdf
    • http://abilenecares.org/uploads/1/3/0/6/130622009/suzugujeligo_nirakedi_bomire_darobiwiwek.pdf
    • http://desatascossabadell.com/uploads/1/3/0/5/130589249/veseke.pdf
    • http://foothillsbiblefellowship.com/uploads/1/3/0/4/130483215/130483215.html#kore+filmleri+izle+t%C3%BCrk%C3%A7e+altyaz%C4%B1l%C4%B1+romantik+komedi

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013a1.bin
f71522020c011828f6981cdd6fa7c0457569385d7d906e792746389ce5a9bf37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13A1 9200 bytes

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