Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a1f12be7b20df5a…

MALICIOUS

PDF

40.3 KB Authoring application: pdf-parser
MD5: 567335c1609cca31623d5295b82d7b84 SHA-1: eeef98373ea2f01a634bc7fe65f70ac2aa4490c0 SHA-256: 9a1f12be7b20df5a93b3b615b1b15a2188ccc4cdfde88ceda36c1ebc5c84a162
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection intent. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external link farm, suggesting the primary goal is to drive traffic to these external resources, potentially for phishing or malware distribution.

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://bevin.fsbservicios.com/uploads/2020/01/28/b9f0a.pdf
    • http://untieth.ru/uploads/2020/01/27/98110.pdf
    • http://rogerspma.com/uploads/1/3/0/4/130475981/7247386.pdf
    • http://divinedesign.biz/uploads/1/3/0/5/130550915/rawovuj.pdf
    • http://art-of-drama.com/uploads/1/3/0/5/130543656/9f988bb0cf.pdf
    • http://agrotel.ch/uploads/1/3/0/2/130289415/wusixodipeza.pdf
    • http://maxi-shopping.online/uploads/2020/01/29/sawozaniruzugoje.pdf
    • https://mujexopeto.weebly.com/uploads/1/3/0/4/130483783/8050405.pdf
    • https://jujepefigew.weebly.com/uploads/1/3/0/5/130547405/058ef.pdf
    • http://sugine.fcshield.com/uploads/2020/01/29/6236ab2d124d9.pdf
    • http://buxejig.dddich.ru/uploads/2020/01/28/540581.pdf
    • http://hippychic.us/uploads/1/3/0/5/130538831/gororisamexiduz.pdf
    • http://morganmwilliams.com/uploads/1/3/0/6/130603932/7899966.pdf
    • http://10k-running.com/uploads/1/3/0/6/130604667/mijaxititif.pdf
    • http://legaf.igirls.fun/uploads/2020/01/29/3705812.pdf
    • http://northwestuu.com/uploads/1/3/0/5/130541272/130541272.html#adobe+reader+11+non+dc

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001554.bin
a5ba9668a735bae8046fb7d2934875f6047d1cafe6d7df2280ed64de01084358		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1554 8728 bytes

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