Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9540ee2346acea8…

MALICIOUS

PDF

39.0 KB Authoring application: SWFTools
MD5: a3a16dbbd00c2c1b51780475bb4ca725 SHA-1: fea982f3b616aa1cd885ee56f6c29a8696897c1a SHA-256: d9540ee2346acea8aa1d8cd1c58bb8dc961cf8f8d874305c2f3dbddb4d085883
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The file is a PDF document that contains multiple embedded URLs, all of which are flagged as unknown reputation. The ClamAV detection and ML classifier strongly indicate maliciousness, specifically identifying it as a phishing attempt. The document body, though heavily obfuscated, suggests a lure related to an 'application letter format for teaching job' to entice users to click on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://mich-interiordesignllc.com/uploads/1/3/0/6/130604948/7436074.pdf
    • http://detourmovement.org/uploads/1/3/0/2/130272892/wujawiba.pdf
    • http://rideamr.com/uploads/1/3/0/5/130551013/1226317.pdf
    • http://no1pornreviews.com/uploads/1/3/0/6/130604067/wixunaposed-suwosuwawapoj-vasexigeg.pdf
    • http://zomo.utlytesof.pro/uploads/2020/01/28/8902161.pdf
    • http://davidmarquesibanez.com/uploads/1/3/0/2/130292143/130292143.html#application+letter+format+for+teaching+job

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000122e.bin
1fe79d2b00f7524aabaa1afd31a836bf7bf71ff5b2edb8f2de9c50b20e5acfbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x122E 7624 bytes

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