Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7fab2cbeef13bf9…

MALICIOUS

PDF

29.6 KB Created: 2020-04-14 07:13:07 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 051a123d1169cc530e3383302a731bb9 SHA-1: 6c3f5f57895882d3ec0e0a945f7ae112c39cface SHA-256: a7fab2cbeef13bf962e9e571a988de43c5924f2d489535ea98ba2d5e18b60afa
92 Risk Score

Malware Insights

MITRE ATT&CK
T1598 Gather Victim Identity Information T1204 User Execution

The PDF contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ML classifier strongly flagged this sample as malicious. No scripts were extracted, limiting the analysis of direct execution behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mouserphotography.com/uploads/1/3/0/5/130539074/130539074.html#beginning+paragraph+correction+2+answers
    • http://teachingindigenouseducation.com/uploads/1/3/1/4/131410299/bcead166522eef0.pdf
    • http://platformradio.net/uploads/1/3/0/6/130621853/2987617.pdf
    • http://estrellaladywolvesvolleyball.org/uploads/1/3/0/2/130270982/pogufilujilo_waviguwaf.pdf
    • http://payhimeveryday.com/uploads/1/3/0/4/130435680/munegamujetulutevefo.pdf
    • http://communityimpactleaders.org/uploads/1/3/1/4/131409546/5111810.pdf
    • http://cudahyoptometry.com/uploads/1/3/0/4/130477448/fujatijatesanapuk.pdf
    • http://perry-bowerart.com/uploads/1/3/0/9/130969673/zubepolifasununun.pdf
    • http://allergysupportcentre.org/uploads/1/3/0/5/130590756/3a6a14e98c9f.pdf
    • http://gibson-developments.com/uploads/1/3/0/6/130639272/devudidakivuzu.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_off00004eb9.bin
ae7ee83d4534503dd23b985730d9488d077e55fd38234deb03ec53e08777f14f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EB9 7040 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.