Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4afece46340372b…

MALICIOUS

PDF

56.2 KB Authoring application: ImageMagick
MD5: 9b30ca365a5d21ff99b4666791b2a841 SHA-1: 65dc9b1e10f1c59da833d197669ce172238653f7 SHA-256: f4afece46340372be4364606af0ce418e2e6f11883e6cb51cf66ded870aa861a
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique commonly used for SEO poisoning or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, contains references to 'free templates for website design' and includes several of the malicious URLs, suggesting a lure to download further malicious content or engage in phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://israel-civilian-k9-unit.org/uploads/1/3/0/3/130379063/sotarotizotibudosi.pdf
    • http://wastedtalentdesign.com/uploads/1/3/0/5/130589427/gaxixoda-fokerituv-femotuxa-numegefufulog.pdf
    • https://jazuvosadarov.weebly.com/uploads/1/3/0/5/130545493/nijiveg.pdf
    • http://bettertvbuys.com/uploads/1/3/0/5/130588727/budufip.pdf
    • http://numaluvuf.familiarizarse.info/uploads/2020/01/28/8894240.pdf
    • http://angoloitek.com/uploads/1/3/0/2/130272092/115401.pdf
    • http://itechieguru.com/uploads/2020/01/27/1942453.pdf
    • http://ragfirearmsllc.com/uploads/1/3/0/2/130272853/130272853.html#sample+free+templates+for+website+design

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011d2.bin
29dbb82cf0afa720bb62b1aa62c425168f89cfd828502b618b8c44b8d7346879		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D2 8084 bytes

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