Malicious PDF — malware analysis report

Static analysis result for SHA-256 4395b4d74fe4366a…

MALICIOUS

PDF

37.9 KB Authoring application: LibreOffice Draw
MD5: ccebf8430a68edb4966acf8e644866e5 SHA-1: 87b5f0ce69a203e9b10ae9d36e4743f77787fa25 SHA-256: 4395b4d74fe4366a123e23e2a6426dea84493f65bcb0b82c85c530872748b980
148 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which appear to be dynamically generated for SEO purposes, pointing to other PDF files. This behavior, combined with heuristics indicating a fake invoice or payment lure and a callback phishing lure, suggests the document is designed to trick users into accessing malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' further supports this assessment.

Heuristics 5

  • 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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://nakitahogans.com/uploads/1/3/0/4/130476429/gavafo.pdf
    • http://newarkvalleychamber.com/uploads/1/3/0/6/130604981/tizezerepesiga_wumosub_nodebaxudavov_nuvipewal.pdf
    • http://millikenentertainment.net/uploads/1/3/0/6/130621432/3eacb9fa8e95.pdf
    • http://southamericarealstate.com/uploads/1/3/0/6/130605368/3583319.pdf
    • http://robertjthomasphd.com/uploads/1/3/0/7/130739530/dedukolaxadolaguxome.pdf
    • http://mail.buildsmartgroup.com/uploads/1/3/0/6/130639863/kalixegod_suzutubudo.pdf
    • http://comportawear.com/uploads/1/3/0/6/130622042/tukobaf.pdf
    • http://mykeyconnections.com/uploads/1/3/0/6/130640208/kimoxas_bupaj.pdf
    • http://ninarayviola.com/uploads/1/3/0/7/130775856/399eac3.pdf
    • http://fruitymessagebroker.net/uploads/1/3/0/8/130814830/9a7e08a66c4b0cc.pdf
    • http://sgcompany.org/uploads/1/3/0/2/130289355/junoro.pdf
    • http://maintco.org/uploads/1/3/0/4/130483848/1260b1805633.pdf
    • http://www.ashleyhronek.com/uploads/1/3/0/5/130550890/762d799b2715.pdf
    • http://web6.pleasingfood.com/uploads/1/3/0/5/130547771/130547771.html#service+canada+old+age+pension+application+form
    • http://mykeyconnections.com/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003b9f.bin
0f0d206707c9e4c6265b1ff87251291df0f8cc72d078cbd42437810491a16919		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3B9F 7748 bytes

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