Malicious PDF — malware analysis report

Static analysis result for SHA-256 18a81cb239572d27…

MALICIOUS

PDF

35.7 KB Authoring application: SWFTools
MD5: e58f45c79a325bee151b66b537467f02 SHA-1: ea3a62192b1393564aa8c88383b48b5fd12c540e SHA-256: 18a81cb239572d277c708e6f5d870625364eadb89d9c97640b1187f899ab250c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, indicating a link farm or a distribution mechanism for further content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly suggest malicious intent. The embedded URLs are likely used to redirect users to malicious sites or download additional payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://showthemhowllc.com/uploads/1/3/0/6/130621614/fukoga.pdf
    • http://wuredorut.mariocoin.ru/uploads/2020/01/28/4778254.pdf
    • http://pavowedizu.igorlucshii.online/uploads/2020/01/28/1c0b210d74.pdf
    • http://nuzaf.knb-games.pw/uploads/2020/01/27/26b9ac15.pdf
    • https://tapefolixagene.weebly.com/uploads/1/3/0/4/130489090/8288336.pdf
    • http://595corporateparkofcommerce.com/uploads/1/3/0/6/130604589/1603650.pdf
    • http://totuf.centrmebliv.com/uploads/2020/01/28/527ef94.pdf
    • http://zojalog.isabellaestetica.com/uploads/2020/01/27/4432508.pdf
    • http://varimibej.resegua.com/uploads/2020/01/29/713a57b.pdf
    • https://baxesaxanog.weebly.com/uploads/1/3/0/5/130588220/e8d72234.pdf
    • http://danheat-sunrain.ru/uploads/2020/01/27/zopujifuvubuxod.pdf
    • http://maw.thebestessay.info/uploads/2020/01/28/tovip_zegokufujek_fonefo_xugat.pdf
    • https://giganibuz.weebly.com/uploads/1/3/0/6/130605176/6444722.pdf
    • http://wabo.frenemywebsite.ru/uploads/2020/01/28/8540641.pdf
    • http://zygoptera.us/uploads/1/3/0/4/130476024/wopaliwunuzevakak.pdf
    • http://djsacademy.com/uploads/1/3/0/2/130288456/130288456.html#plaque+score+index

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001394.bin
3cb316dbca1ded6d5c0f3ac08961df6e8512ed94afb19c17680f8b86dff6418b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1394 7400 bytes

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