Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dd6d38a158e7b9b…

MALICIOUS

PDF

40.1 KB Authoring application: Mobipocket Creator
MD5: 33cfd6dfacd64ecb6b8fc9f19f01c324 SHA-1: e0fd81da0876cea7afcb29b4f26fe9a84b07d2c5 SHA-256: 6dd6d38a158e7b9b4828f7cde5965d64eb2f22104e47072c7f266fe46ee2d8de
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of embedded URLs pointing to other PDF files, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the structure and URL patterns are consistent with a malicious PDF dropper.

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://petsplayfull.com/uploads/1/3/0/5/130588492/wilebuwatik-vuxax.pdf
    • http://rem5vrlab.com/uploads/1/3/0/6/130639333/digofes-gukonemub-pewijosumumidos.pdf
    • http://kejotus.myshop15.site/uploads/2020/01/28/tudevabu.pdf
    • http://nantigo.com/uploads/1/3/0/6/130639488/650246eb.pdf
    • http://cabinetdanconsulting.com/uploads/1/3/0/4/130476795/dapewevezusat.pdf
    • http://camelback.fr/uploads/1/3/0/2/130270967/jimegijef.pdf
    • http://northeconstruction.com/uploads/1/3/0/6/130604701/sawunonozakimememu.pdf
    • http://thoughtsonmarketing.com/uploads/1/3/0/2/130289166/50e39c863.pdf
    • http://trishasxtremeclean.net/uploads/1/3/0/5/130550760/7135722.pdf
    • http://blockchainambassador.ca/uploads/1/3/0/6/130621552/130621552.html#compounding+guidelines+pharmacy+board
    • 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_off0000121d.bin
7c1236e610f1d4e3cfd1e84603e861e00f1ae24679ffea823ad609dca3967d4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121D 8072 bytes
font_01_sfnt_off00005617.bin
6db2f878e0fd57d3a351d0d81a5ccd7b58f68df6728dadc3aee3ebeb1a1d6e60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5617 16068 bytes

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