Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ff64dcf5e1ad47d…

MALICIOUS

PDF

56.1 KB Authoring application: LibreOffice
MD5: 1715fb56077ef391ba9781c3c7bf7208 SHA-1: 13784dc37767d38fcf51e15d83604723aef06618 SHA-256: 5ff64dcf5e1ad47d953e004d19baad20f49a746314a587243fd0656f46a57765
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to other PDF files, disguised as Michelin guide content. This heuristic firing, combined with ClamAV detection and ML classification, strongly suggests a phishing or scam campaign designed to redirect users to malicious content. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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://ehkhoo.com/uploads/1/3/0/6/130604209/kifek.pdf
    • http://dougzanderart.com/uploads/1/3/0/4/130483656/2350051.pdf
    • http://thejujucompany.com/uploads/1/3/0/6/130639675/zuruwilesudu.pdf
    • http://hccbillings.org/uploads/1/3/0/6/130621451/siwidivod_vodimadil_likuzewuta.pdf
    • http://danthropology.com/uploads/1/3/0/3/130313075/vonidefabukun.pdf
    • http://damoj.faring8.net/uploads/2020/01/28/sogobexen-xiroveman.pdf
    • http://bctee.com/uploads/1/3/0/7/130740316/fiponatafa.pdf
    • http://transportmediamarketing.com/uploads/1/3/0/5/130546024/045237d226db90.pdf
    • http://bakersfieldbreakoutzone.com/uploads/1/3/0/5/130551174/pirorarelif_gizujexulopo_vitubasafis.pdf
    • http://banchoryeastchurch.org/uploads/1/3/0/6/130604025/4854950.pdf
    • http://mhsclassof1976.com/uploads/1/3/0/7/130739567/9687204.pdf
    • http://musicmastertraining.com/uploads/1/3/0/5/130551210/dipenojegesad.pdf
    • http://zambiasafarihunting.com/uploads/1/3/0/6/130605299/130605299.html#michelin+guide+london+2020+book
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013e7.bin
f613b6d9b56510608967d7bb735bd9a14662be48090aedfad58a2164b31f416b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13E7 9772 bytes
font_01_sfnt_off0000956f.bin
0437ae0a8c3b0d4d0bca19117c23f937da5e886acb635ecc2018453b05816554		 pdf-font-stream PDF embedded font (sfnt) at offset 0x956F 16168 bytes

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