Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a1e59cafb84946b…

MALICIOUS

PDF

38.4 KB Authoring application: Scribus
MD5: 53173929c21012eafb4cb5dd1c673d0b SHA-1: 1cc30e622c1ee0d54842a2dfe5080f45e3de91aa SHA-256: 6a1e59cafb84946b3d1f9f804840a1322ce746bd72b9c5329e48322f98c4560e
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document that contains multiple embedded URLs, several of which point to suspicious PDF files. The ClamAV detection and ML classifier strongly indicate maliciousness, specifically related to phishing. The document body, though truncated and containing garbage data, mentions 'Chinese acupressure points for anxiety' which appears to be a lure to disguise the malicious intent of directing users to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://novasparockyhill.net/uploads/1/3/0/3/130324420/6294860.pdf
    • http://sync-cars.com/uploads/1/3/0/6/130604310/vakidiku.pdf
    • http://focusedlogistics.com/uploads/1/3/0/3/130379138/c047bbe.pdf
    • http://zab.centrmebliv.com/uploads/2020/01/29/5229175.pdf
    • http://kreativekidsworld.com/uploads/1/3/0/6/130621464/130621464.html#chinese+acupressure+points+for+anxiety
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001012.bin
046aba0bac522000ccdba9566d8a5d24fba7a7f7befffc41e4df1cb095206448		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1012 8268 bytes
font_01_sfnt_off00004ed5.bin
5d7ebd720715cd86529581f1d40cc643f68465477bd430d4be5ff736bc95f798		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4ED5 16268 bytes

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