Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eefe20f752c6fe6…

MALICIOUS

PDF

44.7 KB Created: 2020-04-02 20:56:26 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4b22dc3e6e44baf66d5c800900e08545 SHA-1: 7f808eeb279f6dd80307b1a8256dabd0a4091ca9 SHA-256: 0eefe20f752c6fe6e88a9f0a8d4dbe7671698efb88774f83c6dd5e13ec1c6955
104 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDFs, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly indicated maliciousness. While no scripts were directly extracted, the PDF structure and numerous embedded URLs point towards a malicious workflow designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://nancyhensel.com/uploads/1/3/0/8/130814407/130814407.html#bruno+munari+good+design+pdf
    • http://ozziefood.com/uploads/1/3/0/5/130538986/5668428.pdf
    • http://my-cwb.com/uploads/1/3/0/5/130588913/3b9354c.pdf
    • http://capizomics.com/uploads/1/3/0/2/130272403/zisaruwoliwoxalili.pdf
    • http://cantelinnovations.com/uploads/1/3/0/5/130588428/e31598d1f.pdf
    • http://aesah.com/uploads/1/3/0/9/130969744/lodewokonunifo-furezuk.pdf
    • http://getyourbody.org/uploads/1/3/0/6/130620249/729533.pdf
    • http://revenuesf.com/uploads/1/3/0/5/130588622/6c07eb5b423ad.pdf
    • http://dickstotrump.com/uploads/1/3/0/8/130813764/levikasozoxoneze.pdf
    • http://lisannevanaert.nl/uploads/1/3/0/7/130738919/5085992.pdf
    • http://cimarronguitars.com/uploads/1/3/0/6/130621004/08b2c7e7c6af2f3.pdf
    • http://jeremyprevostlasvegasnevada.com/uploads/1/3/1/4/131452967/a5ea3c82df8c.pdf
    • http://beholdgargantua.com/uploads/1/3/0/6/130605198/turubosuxukubi.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_off000080ac.bin
284b36404f74fcb28eb7c05e346a0d6a594280181749ba35345edfeef2983850		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80AC 9996 bytes

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