Malicious PDF — malware analysis report

Static analysis result for SHA-256 98f425c88d76b7fe…

MALICIOUS

PDF

52.8 KB Created: 2020-05-18 03:19:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c29c6e89ce376069e2b350d6bbbc926c SHA-1: c2008bf3ea2b2faf6691588f9a613c9e4148c2e9 SHA-256: 98f425c88d76b7fef0a98d094e8e4fd320152e95645612be32d5f710dcbfdf2c
92 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a link farm detection and an ML classifier. The document body contains numerous URLs pointing to external PDF files hosted on various domains, suggesting a coordinated effort to redirect users. The primary lure appears to be a 'crafting guide' for Minecraft, likely intended to deceive users into visiting these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://msgarletts-hancock.com/uploads/1/3/0/8/130874386/130874386.html#crafting+guide+minecraft+xbox+one
    • http://dedicatedbillingsolutions.com/uploads/1/3/1/3/131379478/5ca810c9.pdf
    • http://telcone.com/uploads/1/3/0/8/130874322/f214e8a913af20.pdf
    • http://keriaskloset.com/uploads/1/3/0/7/130739449/854f927c73a0.pdf
    • http://djlarie1.com/uploads/1/3/0/3/130312951/tujubopidopepef.pdf
    • http://greenvalleyfloral.net/uploads/1/3/0/6/130620581/wetejibebi.pdf
    • http://photomat-mieten.de/uploads/1/3/0/4/130436017/7199433.pdf
    • http://verycarol.com/uploads/1/3/1/0/131070458/6892235.pdf
    • http://keithnylund.com/uploads/1/3/1/0/131070006/4846447.pdf
    • http://woodcuts.eu/uploads/1/3/1/8/131857144/af602e2fd26c.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008dd2.bin
797fdb5a5f370be684a645e28cc20d074eecc7a5a084cfe2b4602ddd2b0faa91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DD2 10852 bytes
font_01_sfnt_off0000b300.bin
c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB300 16204 bytes

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