Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cb7a1fa3a7d0ba8…

MALICIOUS

PDF

44.3 KB Authoring application: OpenOffice.org
MD5: debec17b82a58de1da8a9fab60e003ff SHA-1: e60a4ffa9548d6472f255c032831768476fa3203 SHA-256: 8cb7a1fa3a7d0ba8f71ac74a3a489dc39c9973745c065543059dd166c4457f4e
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious payloads. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body contains garbled text, suggesting it is not intended for human consumption but rather as a lure or container for the malicious links.

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://acdclothing2014.com/uploads/1/3/0/4/130483474/68d03bff0.pdf
    • http://naturalbalancetherapies.org/uploads/1/3/0/4/130483961/xolugutepobonon.pdf
    • http://glowfaceclinic.co.uk/uploads/1/3/0/8/130873867/8303415.pdf
    • http://encanaplanophotos.com/uploads/1/3/0/4/130476539/kojisaxalusejuk-liluwigokit-pedarapiwivusoz-dawijexizaxu.pdf
    • http://rrgdigitalmarketing.com/uploads/1/3/0/4/130435711/besomu_gukexena_natobas_fubabo.pdf
    • http://www.proyectochispa.org/uploads/1/3/0/3/130313345/zugagobira.pdf
    • http://kareego.net/uploads/1/3/0/7/130776407/1b73b473b4474a.pdf
    • http://repairplumberfortworth.net/uploads/1/3/0/7/130738673/bebudigedovufesuba.pdf
    • http://damorse.com/uploads/1/3/0/3/130323377/5f8945.pdf
    • http://ndtasanantonio.org/uploads/1/3/0/6/130620367/kavorolegijuxutuzimi.pdf
    • http://opusxgroup.com/uploads/1/3/0/7/130776388/1661031.pdf
    • http://nchep2017.org/uploads/1/3/0/7/130775308/9e89d18284223.pdf
    • http://avikat.com/uploads/1/3/0/7/130738948/lemuvepukoxenupolema.pdf
    • http://brightpassiveincome.com/uploads/1/3/0/3/130379295/jigowejumebofilaru.pdf
    • http://leegiles.net/uploads/1/3/0/7/130776049/goxirefadova_ximesejukemal_pijojakesa.pdf
    • http://arelevantlife.com/uploads/1/3/0/8/130814340/rumer.pdf
    • http://jaimoda.com/uploads/1/3/0/7/130775395/saravup_saradalamej_xekutesaxage_vexim.pdf
    • http://kylpinc.org/uploads/1/3/0/8/130813362/xupoxiwenaladezega.pdf
    • http://ktrpo.com/uploads/1/3/0/5/130589219/2977565.pdf
    • http://www.thechrislapakko.org/uploads/1/3/0/8/130814758/34883982a8.pdf
    • http://isabelladephillipo.com/uploads/1/3/0/7/130775730/tusutimomopaje_zovijokebatulez_vokire_xovuvinisedoz.pdf
    • http://shadowbendtest4.com/uploads/1/3/0/4/130490421/jusurora.pdf
    • http://3vgfj.bpmtc.com/uploads/1/3/0/7/130776132/130776132.html#zelda+ocarina+of+time+deku+tree+boss

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a83.bin
84a08294240b4e032fc44d33537d85c55547526a1edd651d6bddac529fa5c68d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A83 8408 bytes

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