Malicious PDF — malware analysis report

Static analysis result for SHA-256 a721de46a3fe3483…

MALICIOUS

PDF

43.1 KB Authoring application: QPDF
MD5: 3ea9eb364d54dcf793b915d8de24dcae SHA-1: 50ad25e2b0d234d0400492ede585483c6a3f2707 SHA-256: a721de46a3fe348393275d044d8b7ce87fd0c26e088d4597aef2173afc056b9a
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, characteristic of a link farm designed to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious distribution intent. The embedded URLs likely lead to further stages of infection or phishing attempts.

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://brokenphone.com/uploads/1/3/0/5/130590677/061314dab38c1c.pdf
    • http://mschris.net/uploads/1/3/0/2/130271049/rezuxo.pdf
    • http://citizensfirstfinancialgroup.com/uploads/1/3/0/6/130604467/nilopedijuxox.pdf
    • http://oakridgestables.co.uk/uploads/1/3/0/6/130604986/jeguwogebimaxe-waduxowin.pdf
    • http://terezcharleston.com/uploads/1/3/0/3/130313191/c7e286cd.pdf
    • http://percyphotos.com/uploads/1/3/0/4/130483158/2019087.pdf
    • http://myhealthylifestyle.club/uploads/1/3/0/5/130545334/subugobemibepon-kawoz-xelizakeberites-selexa.pdf
    • http://foodforthoughtnau.com/uploads/1/3/0/5/130551081/rurirepi_varebiles_madusetizaboguf_xogalatinirane.pdf
    • http://pointbiolabs.com/uploads/1/3/0/7/130776888/nubavo.pdf
    • http://www.bloodsugarbikemagic.com/uploads/1/3/0/6/130620185/622a9.pdf
    • http://digitalmonetizers.com/uploads/1/3/0/6/130639362/fubitijige-tevimagolu.pdf
    • http://heroesclubusa.com/uploads/1/3/0/5/130588508/56d48f57ffa88b.pdf
    • http://www.stackedoddstuning.com/uploads/1/3/0/7/130739635/zavexuv-dijapunuzore.pdf
    • http://weatherproofguide.com/uploads/1/3/0/6/130620439/130620439.html#the+magical+number+seven+plus+or+minus+two+summary

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e7b.bin
cf8f57df964197d3a9ec6ae71763b8c45ba207ac854f28a50c200c09c7e6e5e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E7B 8448 bytes

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