Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc1a8bb81438f36c…

MALICIOUS

PDF

38.4 KB Authoring application: PDFedit
MD5: 2a3c10536ccb182bdb4fa3fbdd063f38 SHA-1: 2309ced344a8f99aed8be83ffd2b7db1d71e14c8 SHA-256: dc1a8bb81438f36c262c61dd200a1a5420492c4dc6473a48e07d3abfed74751e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs, identified as a link farm, which is a common tactic for distributing malicious content or conducting phishing operations. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection intent. The document body mentions 'How to unblur chegg answers', suggesting a lure to trick users into clicking 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://adventureoutpostsurvivalbags.com/uploads/1/3/0/6/130639484/domepajap.pdf
    • http://theabdy.com/uploads/1/3/0/6/130621132/2d2f441.pdf
    • http://leadershipandstrength.com/uploads/1/3/0/5/130588492/9309938.pdf
    • http://metconeng.ca/uploads/1/3/0/7/130740151/zarota-tawufuk-bazotiwesax.pdf
    • http://altitudefitnessservice.com/uploads/1/3/0/2/130271103/xenuseguvif_kejunizuzupefe.pdf
    • http://reclaiminghopecounseling.com/uploads/1/3/0/2/130289813/zekir_xumasaxuta_zolojuponutom_xajiguvu.pdf
    • http://peaksmobile.com/uploads/1/3/0/5/130551907/7454982.pdf
    • http://rose-annerussell.com/uploads/1/3/0/3/130313445/c0278d0247.pdf
    • https://ninigupuxoro.weebly.com/uploads/1/3/0/2/130272388/nozabedagijiv-danidedowegelo.pdf
    • http://dev.moabgear.com/uploads/1/3/0/2/130292110/4551654.pdf
    • http://trentriverdesigns.com/uploads/1/3/0/5/130590205/130590205.html#how+to+unblur+chegg+answers

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000129f.bin
f2d0b58a31a5274f70edd52b087733c313c620c3db469fb208732aa2dfe48a34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129F 8012 bytes

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