Malicious PDF — malware analysis report

Static analysis result for SHA-256 b99a9ba4157956a9…

MALICIOUS

PDF

41.9 KB Authoring application: Soda PDF
MD5: 12aa75761c08740e4b86a2d25a49699c SHA-1: 63716e12e71d95b8943d1355d25d61a3db59435f SHA-256: b99a9ba4157956a922aecf20f6127ec80e8958c6de9c89b1130106c8e624a3ac
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted across various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, aligning with the PDF_SEO_LINK_FARM heuristic.

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://beaconclean.com/uploads/1/3/0/2/130271159/dakaxiwas.pdf
    • http://perfectcreationsforyou.co.uk/uploads/1/3/0/5/130590338/bugidoguduzemi-xikatokeze.pdf
    • http://yearsofadventures.com/uploads/1/3/0/8/130815115/3c7fd79a7d039ae.pdf
    • http://lindseymarina.com/uploads/1/3/0/4/130490602/loxawibukudetotuvi.pdf
    • http://lataco.net/uploads/1/3/0/4/130483957/nofejusapuj.pdf
    • http://adamhilto900eportfolio.com/uploads/1/3/0/6/130622103/faxujunadusif-pubibotoro-bafex-xotub.pdf
    • http://thearchitecturalgardendigest.com/uploads/1/3/0/6/130621973/b59f4c32e6.pdf
    • http://www.bablithreadingsalon.com/uploads/1/3/0/2/130288551/6833711.pdf
    • http://biologiadellanutrizione.com/uploads/1/3/0/5/130588564/4364389.pdf
    • http://admin.lakeviewchiro.com/uploads/1/3/0/7/130739693/2482621.pdf
    • http://thebaliqueen.com/uploads/1/3/0/5/130550818/aa0bc327233ac8c.pdf
    • http://mfwwinecompany.com/uploads/1/3/0/7/130776875/4566639.pdf
    • http://aviemoreholiday.com/uploads/1/3/0/7/130776070/06bcd88c213d.pdf
    • http://www.davenportsalehouse.cocoabeachalehouse.com/uploads/1/3/0/4/130488181/biduxejisarufunekan.pdf
    • http://income-palace.com/uploads/1/3/0/6/130639061/57c0afed2b7fccc.pdf
    • http://typo3-studio.com/uploads/1/3/0/5/130540266/suwonufotonited_sudujegu_mofitijiwegu.pdf
    • http://dmtraining.net/uploads/1/3/0/7/130775624/2524442.pdf
    • http://pavedlifestyle.com/uploads/1/3/0/6/130604069/rulemelelofugi.pdf
    • http://cooloasistires.com/uploads/1/3/0/6/130604042/bbb82dc88.pdf
    • http://ingeniouspictures.com/uploads/1/3/0/5/130551882/ccb522127d9cbd.pdf
    • http://www.atawhaifarmandwild.com/uploads/1/3/0/4/130478975/rikiwiwedixemom.pdf
    • http://engesolution.com/uploads/1/3/0/7/130775448/2168038.pdf
    • http://buydayofthedead.com/uploads/1/3/0/4/130489144/pukobusotewof.pdf
    • http://74-123-79-26.mgwnet.com/uploads/1/3/0/4/130436298/130436298.html#examples+of+essay+writing+in+english+pdf
    • http://lindseymarina.com/uploads/1/3/0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000041e4.bin
5ffbc1a98d8f07e258ad5a2b29dba33222e117e97cdd13db221f79141e96a382		 pdf-font-stream PDF embedded font (sfnt) at offset 0x41E4 7720 bytes

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