Malicious PDF — malware analysis report

Static analysis result for SHA-256 51166d97e50292dc…

MALICIOUS

PDF

47.3 KB Authoring application: LibreOffice
MD5: 3f74dc5407ad7ecdf36bb3987989d582 SHA-1: d6f2527f8db4c0414fb2ed633f5211ff4e006abc SHA-256: 51166d97e50292dcb815508c881d0a18f50be50b6495d5329d219076f015f4fb
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded URLs pointing to external PDF documents. This behavior is indicative of a link farm or a phishing campaign designed to redirect users to malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious classification. No scripts were extracted, limiting the analysis of specific payload delivery mechanisms.

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://genopawok.vodka-fenix.com/uploads/2020/01/28/b59d8aae19.pdf
    • http://kobawad.7x4.ru/uploads/2020/01/29/208662.pdf
    • https://gaxekonop.weebly.com/uploads/1/3/0/2/130272325/8812011.pdf
    • https://vudarulexuzamo.weebly.com/uploads/1/3/0/5/130588388/jiziger.pdf
    • https://pewebiwiko.weebly.com/uploads/1/3/0/6/130605168/1096d7.pdf
    • http://saferockford.org/uploads/1/3/0/5/130551330/d15c2f65.pdf
    • https://birorajose.weebly.com/uploads/1/3/0/2/130274305/mukalagixolawimok.pdf
    • http://tovarug.icu/uploads/2020/01/27/1214935.pdf
    • http://chargehealth.org/uploads/1/3/0/4/130483050/lakifipatanel.pdf
    • http://medojideb.privu.icu/uploads/2020/01/27/vikuvatukugaf.pdf
    • http://lom.soyana.ru/uploads/2020/01/27/744c695a92d.pdf
    • http://buxejig.dddich.ru/uploads/2020/01/29/4121143.pdf
    • http://matchboxorganics.com/uploads/1/3/0/6/130621385/4562038.pdf
    • https://buzevogijuxebil.weebly.com/uploads/1/3/0/5/130543134/lejerazobeto_bizuman.pdf
    • http://sazij.gesscsverde.site/uploads/2020/01/29/donezifod_nelax_kejuwidupomadit.pdf
    • http://xiporiwiz.bybote.pw/uploads/2020/01/27/duzoz.pdf
    • http://107islandjam.com/uploads/1/3/0/5/130588830/2927642.pdf
    • http://bipevoxitu.mnzdrv-biotic.ru/uploads/2020/01/29/vibizepufile_sarevovegorine_vemojutale_gorekaredu.pdf
    • http://bejustalittlebetter.com/uploads/1/3/0/2/130270934/130270934.html#generacion+de+aire+comprimido

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000fb7.bin
2fc8f409cb43586b91563dbcefef2c8dcb7d6a72f521bfaadea7af7d2ba1af8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB7 8776 bytes

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