Malicious PDF — malware analysis report

Static analysis result for SHA-256 df50c44431dcba85…

MALICIOUS

PDF

38.2 KB Authoring application: Nitro PDF
MD5: 954bb0feb750c3a6e1e98eba4a8337dd SHA-1: 028ce629ad16cb7dd80c45e547732c87383c4e6c SHA-256: df50c44431dcba85f1b01b73866aa9c8df565703d7b562f548bcc2d3d2d0d8db
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ClamAV with the signature Pdf.Phishing.TtraffRobotInstall-7605656-0. Static analysis revealed a significant number of embedded external links, indicating a link farm strategy. The primary heuristic firing, PDF_SEO_LINK_FARM, confirms the presence of numerous links, with the dominant host being frontlinehustle.com. The document body contains text related to 'Nitro PDF' and 'Dead Poets Society', likely a lure to disguise the malicious intent.

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://frontlinehustle.com/uploads/1/3/0/4/130436282/430422.pdf
    • http://www.limosinthewoodlands.com/uploads/1/3/0/5/130589179/7229825.pdf
    • http://www.rurrenabaque.org/uploads/1/3/0/6/130620443/6694897.pdf
    • http://bondageelectrocum.porncolection.com/uploads/1/3/0/7/130740089/3271822.pdf
    • http://sheilasauvageau.com/uploads/1/3/0/2/130288458/xolupalomes.pdf
    • http://glorobenterprises.org/uploads/1/3/0/2/130291475/zunikuvati.pdf
    • http://myabloomstore.com/uploads/1/3/0/7/130775130/7288794.pdf
    • http://mkontor.de/uploads/1/3/0/3/130313024/8bc3f.pdf
    • http://thegreattribulation.org/uploads/1/3/0/5/130588382/mujudonajugo.pdf
    • http://colibot.com/uploads/1/3/0/3/130323187/giwidotupefub.pdf
    • http://delarosacreations.net/uploads/1/3/0/7/130739260/muripadiv-gibomowudunoz-fuxenorukedapo-lilazezil.pdf
    • http://mta2.somekindofsimple.com/uploads/1/3/0/5/130544754/8837331.pdf
    • http://est8.us/uploads/1/3/0/6/130621285/runoganalobizugoti.pdf
    • http://uvirtualcare.com/uploads/1/3/0/6/130620343/pagejivesowi.pdf
    • http://umsegundoantesdevocemorrer.net/uploads/1/3/0/5/130539427/724148.pdf
    • http://hackingcloud.com/uploads/1/3/0/4/130483546/fifomumamujonotewiso.pdf
    • http://vacationmemories.voyagerwebsites.com/uploads/1/3/0/8/130814594/130814594.html#poems+cited+in+dead+poets+society

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003783.bin
db1e5484207cf43a9b95544eca8280e92d906088d6eb210853989f32b924367c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3783 8720 bytes

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