Malicious PDF — malware analysis report

Static analysis result for SHA-256 21ef240f24d9311f…

MALICIOUS

PDF

34.0 KB Authoring application: Pdftk
MD5: 355a73828e6e6413b8dfe4f71a61913f SHA-1: adf3f1426a39740d8c98175cef0d02095d7dc21e SHA-256: 21ef240f24d9311f0dc314b671357c08a47a36c55b216da7ff42b38287d0a7ae
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a link farm and presents itself as a movie link to disguise its malicious intent. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates that the document likely instructs the user to open a password-protected archive, a common tactic to bypass gateway security. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports its malicious nature. The embedded URLs are likely part of the delivery chain for a second-stage payload.

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 https://litejarig.weebly.com/uploads/1/3/0/5/130545565/458b14a28.pdf
    • http://letsplayhockey.ru/uploads/2020/01/27/vibobitimawim.pdf
    • https://sarijapomakel.weebly.com/uploads/1/3/0/2/130270911/5314400.pdf
    • http://fiz.kformacion.com/uploads/2020/01/28/rudiluxora.pdf
    • https://sexixabes.weebly.com/uploads/1/3/0/2/130270823/rabuzulinofosaxa.pdf
    • https://tuvudagevigova.weebly.com/uploads/1/3/0/5/130540609/9566887.pdf
    • http://siwuf.med555.ru/uploads/2020/01/28/musale.pdf
    • https://kamowexu.weebly.com/uploads/1/3/0/2/130289530/naraxugopajop-bizetokezel-jajuwiruzeviw-tonedutirewefox.pdf
    • http://bitimecash.com/uploads/2020/01/27/jiwevoxawifegaxovunu.pdf
    • http://bojap.biofermentor.net/uploads/2020/01/27/turin_bogerinisirovog.pdf
    • http://lookingrightnow.com/uploads/1/3/0/5/130550910/130550910.html#pokemon+te+elijo+a+ti+pelicula+onlin

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012cc.bin
6cfd2309995e2530c85ec94ab319699c03815630f1181c83cf5f42493564cc86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12CC 9092 bytes

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