Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9dde30638578a94…

MALICIOUS

PDF

37.7 KB Authoring application: Scribus
MD5: 0707a5e3c84ee16e2faebbab46b42e4d SHA-1: e644970233fb7f0df7a678f2fb5782d4c39c3b48 SHA-256: c9dde30638578a94c960e5361da499390a2df6dd74c98d3fe0143b53cfc454ba
150 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The critical PDF_SEO_LINK_FARM heuristic indicates the presence of 31 external PDF links, with the first being http://bakktchain.com/uploads/1/3/0/2/130271232/8835f0b5545.pdf. This suggests a phishing or SEO manipulation campaign where the document serves as a gateway to numerous other malicious or deceptive PDF files.

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://bakktchain.com/uploads/1/3/0/2/130271232/8835f0b5545.pdf
    • http://openmasajes.net/uploads/1/3/0/5/130590416/15b082dbf762bd4.pdf
    • http://www.openin4.com/uploads/1/3/0/7/130776296/8c4b921.pdf
    • http://opensash.net/uploads/1/3/0/7/130740124/zitesaluf-pilivetezagix.pdf
    • http://2ndlookdds.com/uploads/1/3/0/2/130289498/kumefipewil.pdf
    • http://saleyourunits.com/uploads/1/3/0/3/130323355/065adb7d.pdf
    • http://ameliakeene.com/uploads/1/3/0/8/130813420/ac0d975e0ae666.pdf
    • http://abrbillboards.com/uploads/1/3/0/2/130291779/juruvuselilunowemapo.pdf
    • http://eng.bleujaunerouge.com/uploads/1/3/0/8/130874639/pagozekorejis.pdf
    • http://senatorpiacayetano.com/uploads/1/3/0/4/130476940/kuxetewun_gilokipinemab_neramiguku_tobuvovalibo.pdf
    • http://misslncreations.com/uploads/1/3/0/6/130620755/3c7c69a.pdf
    • http://myrawilliamsottewell.com/uploads/1/3/0/3/130313345/bf2c30a7.pdf
    • http://reviewbestdogbeds.com/uploads/1/3/0/5/130588337/2617253.pdf
    • http://mx.holo-visions.com/uploads/1/3/0/6/130621228/9233abb2aa37.pdf
    • http://saycheeseplease.me/uploads/1/3/0/2/130287482/10fc4019d38f6a.pdf
    • http://eschert.com/uploads/1/3/0/9/130969456/3bbb294266eb957.pdf
    • http://hifuckers.com/uploads/1/3/0/5/130540010/6392871.pdf
    • http://www.undividedmedia-org.roryvincent.com/uploads/1/3/0/8/130874282/5364584.pdf
    • http://jalksjdlfkjslkjf01.space/uploads/1/3/0/4/130483625/rukolof.pdf
    • http://www.waterheaterreplacementkansascity.com/uploads/1/3/0/2/130287314/jitigukalod.pdf
    • http://deborahsnider.com/uploads/1/3/0/5/130539099/130539099.html#cbre+india+office+market+q3+2018
    • http://www.undividedmedia-org.roryvincen

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000322b.bin
0e1a04d31e88a53b4850cc181bb48de557702a51ec8b03585d694d69a9269ae5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x322B 8456 bytes

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