Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc24b807394b2963…

MALICIOUS

PDF

40.9 KB Created: 2020-03-16 12:48:02 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b80ef8a145cd6a3a23b06f66037a9bfd SHA-1: 94aa6f6e097ef98d1fa08095219f10f3a2e17857 SHA-256: dc24b807394b29639b6816518f090f6f1cab37dd7b39b49b4e0665dd88c86a35
92 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains numerous external links to other PDF files hosted on various domains, indicating a link farm or redirection strategy. The embedded document body text, though heavily obfuscated, contains fragments of URLs and mentions 'Java windows offline installation', suggesting a lure for potentially malicious downloads or further exploitation. The ML classifier strongly flagged this PDF as malicious.

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.
  • 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://38fangguojixianshangyule.br3h.com/uploads/1/3/0/3/130379368/130379368.html#java+windows+offline+installation
    • http://raycessna.com/uploads/1/3/1/0/131071041/taxovu_vuxozuretigud_sukojugaxakox_buvodipuw.pdf
    • http://www.cttcmedia.com/uploads/1/3/0/6/130620240/d63dc05a.pdf
    • http://annobenchain.com/uploads/1/3/0/6/130620224/devefijerulekepupa.pdf
    • http://www.jfeldmanart.com/uploads/1/3/0/4/130475925/8455737.pdf
    • http://ouestartup-guest.xyz/uploads/1/3/0/6/130621194/d39a5f1f2ec16.pdf
    • http://flpowersystems.com/uploads/1/3/0/4/130489090/dipufez.pdf
    • http://053748270.com/uploads/1/3/0/7/130776177/jovupik.pdf
    • http://millark.net/uploads/1/3/0/6/130620449/6491735.pdf
    • http://actscommunitychurches.com/uploads/1/3/0/5/130588749/zapiwe_selivexew.pdf
    • http://thesupporthelp247.com/uploads/1/3/0/2/130272369/tinujejivoxop_worepexutirop.pdf
    • http://mrskramlsclass.com/uploads/1/3/0/7/130740145/buxenakanipaga.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_off0000737d.bin
6ced8a30ad80ea8e65d8e2b069cd1fa06993432e8064613a57aefa5ccd9cc648		 pdf-font-stream PDF embedded font (sfnt) at offset 0x737D 9132 bytes

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