Malicious PDF — malware analysis report

Static analysis result for SHA-256 48b3c8c0105c4bfa…

MALICIOUS

PDF

35.2 KB Authoring application: Nitro PDF
MD5: 8d91bf6314bd95bf76ea85dd3dca6482 SHA-1: e9dc28e6458b30558a4ad1963bb0c68d23053898 SHA-256: 48b3c8c0105c4bfad5621567ea23416793df72effee6f6bfe2a33104c25f9fe8
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent, likely related to phishing or traffic redirection.

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://teatroweb.com/uploads/1/3/0/5/130550664/8644788.pdf
    • http://newrisestrategy.com/uploads/1/3/0/7/130775698/nofovudukita.pdf
    • http://frebat.com/uploads/1/3/0/7/130740623/b2a4280444b69.pdf
    • http://morristileva.com/uploads/1/3/0/7/130738863/6248167.pdf
    • http://www.anandiandme.com/uploads/1/3/0/5/130589189/6232304.pdf
    • http://cellphonebucket.com/uploads/1/3/0/2/130291328/9854673.pdf
    • http://thecajunladies.com/uploads/1/3/0/6/130621895/kovutitatafelarobav.pdf
    • http://dietzart.com/uploads/1/3/0/2/130291572/damelutos_lemedevun_siwuzev.pdf
    • http://ortigroupltd.com/uploads/1/3/0/2/130270745/sugiwagu.pdf
    • http://visitballard.net/uploads/1/3/0/7/130775763/nafitafo.pdf
    • http://psycheoils.com/uploads/1/3/0/3/130313590/fonemudozomimidogoz.pdf
    • http://www.hotelsachasmanchester.com/uploads/1/3/0/8/130814469/govixagejuzivox.pdf
    • http://churnminator.io/uploads/1/3/0/5/130550704/7382036.pdf
    • http://christianmusicandbooks.us/uploads/1/3/0/5/130588954/mimawexaxifizulitij.pdf
    • http://moms-life.net/uploads/1/3/0/8/130814234/56b33ba.pdf
    • http://navyjunkremoval.com/uploads/1/3/0/7/130774972/ladilesu.pdf
    • http://201.bpmtc.com/uploads/1/3/0/7/130775911/130775911.html#cardiogenic+pulmonary+edema+chest+x+ray
    • http://newrisestra

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002eb3.bin
4b1d56e2359120ec2e1d7150f4cf74ecb7f7a91a95e412ba8728ec605fbe614b
pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB3 7936 bytes