Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdb0815b85817e98…

MALICIOUS

PDF

94.6 KB Authoring application: Poppler-utils
MD5: 012d11122915dd4d9f6708dc67760ec4 SHA-1: 01414233a94a4bbecb08989718ee78a9a98499e5 SHA-256: cdb0815b85817e981f56cedc333788cf8b70552a33784be9bdbae926ea02b083
158 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

This PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The embedded JavaScript stream, detected by PDF_JS, likely facilitates the redirection to these numerous external PDF files. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent, likely related to phishing or traffic generation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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 JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://mysql.pacificcafesf.com/uploads/1/3/0/3/130323461/6818405.pdf
    • http://smcolife.com/uploads/1/3/0/3/130379549/61cd430.pdf
    • http://anniemaegreen.com/uploads/1/3/0/6/130621856/29d8a09d8.pdf
    • http://newlifewatersolutions.com/uploads/1/3/0/4/130436357/d4fafc6ac940e.pdf
    • http://www.anexpatwife.com/uploads/1/3/0/5/130589415/sedefilagigilim-xazezu.pdf
    • http://misssoutheastpageantry.us/uploads/1/3/0/4/130475938/tozagafasavodugi.pdf
    • http://ashishyadav.com/uploads/1/3/0/4/130488228/bosedupow-tebewu.pdf
    • http://janiebproductions.com/uploads/1/3/0/3/130379193/4190806.pdf
    • http://stihi.info/uploads/1/3/0/7/130776589/wesibili-jubimakavix.pdf
    • http://webdisk.awha.org/uploads/1/3/0/6/130603916/7b1ab14dde1.pdf
    • http://tsv-fcblegenden.de/uploads/1/3/0/4/130488662/5055293.pdf
    • http://ktburke.com/uploads/1/3/0/6/130603803/f4156498179a.pdf
    • http://humility-grace-dignity.com/uploads/1/3/0/3/130312983/mepunuzomijor.pdf
    • http://host215.carmichaelnl.com/uploads/1/3/0/5/130590208/130590208.html#abandoned+u+bahn+stations+berlin
    • http://newlifewat

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e01.bin
d97dfbc21fe6e146a3eef44a83e273e0a40f7ff7e205f787446df5985655a5fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E01 10764 bytes
font_01_sfnt_off00012fc1.bin
41131093993d2c77b39036ce4aef542b25d97f89761e7607581f81471c29bfbb
pdf-font-stream PDF embedded font (sfnt) at offset 0x12FC1 16080 bytes