Malicious PDF — malware analysis report

Static analysis result for SHA-256 44009937621f49e1…

MALICIOUS

PDF

39.2 KB Created: 2020-05-15 00:18:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00abf53418b93a5091cd1ed59ddc8b7d SHA-1: dd451fb07713dca0a455339aff64e21909ec12dd SHA-256: 44009937621f49e142278c492055f4ad7467056abd7fc3fc6f750b565847307a
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, which is a common technique for SEO manipulation or distributing malicious content. The ML classifier strongly indicated maliciousness. The document body contains garbled text but includes a URL that aligns with the detected link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • 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://mmwallandcompany.com/uploads/1/3/0/7/130739809/130739809.html#game+gangstar+2018
    • http://indahahn.com/uploads/1/3/0/6/130620217/weronakufipogup.pdf
    • http://kfxmiami.com/uploads/1/3/0/6/130639634/34fca2b.pdf
    • http://osquarepad.com/uploads/1/3/1/1/131164132/8960457.pdf
    • http://collegebudgethealthy.com/uploads/1/3/0/2/130272600/20bc2f8b.pdf
    • http://nikkiwadley.com/uploads/1/3/1/4/131406841/8015703.pdf
    • http://mindwellnesscoach.com/uploads/1/3/1/3/131398246/8a010e4df.pdf
    • http://koviroartworks.com/uploads/1/3/1/1/131164093/pibibutejemofuxe.pdf
    • http://informai.org/uploads/1/3/1/4/131452947/zaguzevonosum.pdf
    • http://middletennesseeflyfishing.com/uploads/1/3/0/6/130604903/6317a93e7102.pdf
    • http://coloradohedgehogs.com/uploads/1/3/0/9/130969428/poduzo.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f9c.bin
0f9db23f860ce8e602167be8fb4d0f121141689d47643871549692dcd59d125a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9C 22848 bytes

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