Malicious PDF — malware analysis report

Static analysis result for SHA-256 665c64a7b29fcd8f…

MALICIOUS

PDF

30.6 KB Created: 2020-04-08 21:58:05 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2c6cad096bdc09cc733d5c2943df9429 SHA-1: 50ecb4c752f69e57098533b210f1a9d10fccc993 SHA-256: 665c64a7b29fcd8ff05ee26b7c48e240d86933dd4c7274f11c98fd93a55748c7
96 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or a mechanism to distribute further malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external URIs supports this assessment.

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://fathomhawaii.com/uploads/1/3/0/7/130740055/130740055.html#pauvre+anne+chapter+2
    • http://brentwoodcprtraining.com/uploads/1/3/0/6/130620428/098d7f3e7.pdf
    • http://saiyle.com/uploads/1/3/0/2/130289645/2372427.pdf
    • http://enterthemoviezone.com/uploads/1/3/0/6/130604888/jefap.pdf
    • http://yasikaoshizhushou.org/uploads/1/3/0/6/130604312/5082787.pdf
    • http://leadershipresourcesforband.com/uploads/1/3/0/6/130621995/ludojozukinunamofune.pdf
    • http://kristylermahomes.com/uploads/1/3/0/4/130483573/durozoxarizin_morinidapug.pdf
    • http://luxxweddingsevents.com/uploads/1/3/0/4/130436108/6823069.pdf
    • http://the-way-of-life-blog.com/uploads/1/3/0/7/130739117/8380914.pdf
    • http://basecampcards.com/uploads/1/3/0/4/130435875/kuxovaf.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_off00005350.bin
38e1b6bcb65a2946bf2b0f3cdeea1a55c10849425b17c8373d33f9706c17bad4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5350 6700 bytes

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