Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f3a2b33913cfd65…

MALICIOUS

PDF

40.0 KB Authoring application: QPDF
MD5: f9416f3b8c8f74de30f754d105a9e93c SHA-1: 297ab85807eb3c146383a5376035b0593d333b0a SHA-256: 0f3a2b33913cfd65a2f8aa5ba4e00d463e830e81bea017cdf3fb4cd20a492eca
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute further malicious content. ClamAV and ML classifiers also flagged this file as malicious, specifically identifying it as a phishing or robot-related threat. The embedded URLs suggest a pattern of redirecting users to potentially harmful content.

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://burningmaneurope.com/uploads/1/3/0/8/130874305/3070454.pdf
    • http://dcepool.org/uploads/1/3/0/6/130605135/3299108.pdf
    • http://scootersafari.co.nz/uploads/1/3/0/5/130542822/wiwisesu_lenomobix.pdf
    • http://acadiaextracts.net/uploads/1/3/0/3/130323291/b1c03722dcfe06.pdf
    • http://ashleighcrystal.com/uploads/1/3/0/4/130478261/5fed4d0.pdf
    • http://house-of-adornment.com/uploads/1/3/0/4/130483418/tinukavibabuf-wurisujudikob-fazugi.pdf
    • http://brujaheights.com/uploads/1/3/0/4/130436362/xalanunazulejov.pdf
    • http://embracinglifeconsulting.com/uploads/1/3/0/4/130476158/5617115.pdf
    • http://rcaleel.com/uploads/1/3/0/6/130604728/25cf2db1c9f.pdf
    • http://myhtri.net/uploads/1/3/0/3/130323157/gujiwawetifa-mojalefavotidu-naxusugatoduwo.pdf
    • http://bedobecome.co/uploads/1/3/0/5/130551112/ae8e6d0ca84090.pdf
    • http://startingpoint.info/uploads/1/3/0/2/130272600/130272600.html#ascaridia+galli+pada+ayam

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000131f.bin
8a47e82ece0983dbf55adf79be41adff1ae2af39a21989888aec59136daaf1e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x131F 8964 bytes

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