Malicious PDF — malware analysis report

Static analysis result for SHA-256 1796d0c250a07bd0…

MALICIOUS

PDF

39.6 KB Created: 2020-03-30 15:11:02 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: bb8444e7080b83205320990407fdde42 SHA-1: da27773430f128cd3c4b25b4ce637a34669d45e1 SHA-256: 1796d0c250a07bd0ae4f3c4efa40ab69724a02ea7f52fff48a75a95a87c60839
96 Risk Score

Malware Insights

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

This PDF document was flagged by an ML classifier as malicious. It contains a large number of embedded external links, suggesting a link farm or a distribution point for further malicious content. The document body contains garbled text and references to the authoring application, but the primary malicious activity appears to be the extensive use of external URLs for unknown purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://benkregel.com/uploads/1/3/0/7/130775011/130775011.html#the+devil+thoth+tarot+card+meaning
    • http://spanishpeakslot.com/uploads/1/3/0/6/130621952/5830905.pdf
    • http://hwkmth.com/uploads/1/3/0/4/130488414/puputo.pdf
    • http://howwemove.net/uploads/1/3/0/7/130775431/ac11925ad.pdf
    • http://corpkafsima.net/uploads/1/3/0/5/130543052/lezajitadapubok_powaf_fijasotidusujoj.pdf
    • http://o2smallhouse.com/uploads/1/3/0/7/130776640/fa29740aa2b45.pdf
    • http://sarahfreishtat.com/uploads/1/3/1/3/131380500/delasoweligijez.pdf
    • http://jimmyplease.com/uploads/1/3/1/0/131070702/554214.pdf
    • http://mail.s-gbuilders.com/uploads/1/3/1/0/131070829/fesebekew.pdf
    • http://1920blaq.com/uploads/1/3/0/2/130291582/femefevuvegudaside.pdf
    • http://capitalmarketstech.com/uploads/1/3/0/4/130483047/2f14595de4911fe.pdf
    • http://neboair.com/uploads/1/3/0/3/130379162/1003193.pdf
    • http://belindascorner.com/uploads/1/3/1/3/131379262/7403958.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_off00006f4f.bin
5d739cd1c9055d1e8dc16330b919ace866d811263addbd1bfd85f3611a4d3aa6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4F 8548 bytes

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