Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aef6674633b0072…

MALICIOUS

PDF

33.6 KB Authoring application: ImageMagick
MD5: 3561588156abd67ae169ff9b0d96bda6 SHA-1: 9f702104157602c48b126f309233fdb3967fd675 SHA-256: 2aef6674633b00721bc106255ecdf841017364554f287cc93d607630a226aab4
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links pointing to external PDF files hosted on various domains. This technique is commonly used to distribute malicious content or conduct phishing campaigns. The ClamAV detection and ML classifier strongly indicate malicious intent, and the heuristic 'PDF_SEO_LINK_FARM' confirms the suspicious linking behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://eduardoparedescrespo.com/uploads/1/3/0/7/130740213/7654440.pdf
    • http://poko.chat/uploads/1/3/0/7/130739894/tuvus-bisiwepoma-riwixoxabafoset-zanepewej.pdf
    • http://www.vpn.laurelmedpa.com/uploads/1/3/0/3/130313557/4526086.pdf
    • http://theflowerpower.net/uploads/1/3/0/8/130815058/4915321.pdf
    • http://mail.aitheriaelaia.com/uploads/1/3/0/9/130969462/sonita-makuver-sadigekubuxi-xofevapawer.pdf
    • http://countrychunkiecandle.com/uploads/1/3/0/5/130550652/3465020.pdf
    • http://flowergirlkauai.com/uploads/1/3/0/2/130288722/7fce92b4d1c505.pdf
    • http://www.joliemaison.net/uploads/1/3/0/5/130588475/sunupopinatu_wozitefakap.pdf
    • http://muzoemerald.net/uploads/1/3/0/4/130483394/kapofose.pdf
    • http://saltcitysoccer.com/uploads/1/3/0/3/130323818/tuxozumu_zulovubefaxuma_wazevibaxa.pdf
    • http://74-123-77-9.mgwnet.com/uploads/1/3/0/7/130739194/130739194.html#endometrial+ablation+recovery+blog
    • http://saltcitysoccer.com/uploads/1/3/0/3/130323818/tuxozu

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d07.bin
11368fb8715f3a896b0e75f0f526c892790bb1b165215a105c5c0c206a0d1af8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D07 7892 bytes

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