Malicious PDF — malware analysis report

Static analysis result for SHA-256 899bd4323840f64f…

MALICIOUS

PDF

38.6 KB Created: 2020-04-08 14:54:01 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2cfde78395517a838b34cb2439651bb6 SHA-1: 640d06e2ed1b95079d9f2f804d8fd00123c8316e SHA-256: 899bd4323840f64f6d96208434f3f5638b007b2b9427ce70e58c7f94510524ec
96 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'Wii remote charging station instructions' and embeds a large number of external links, many of which point to PDF files hosted on unrelated domains. This suggests a link farm or redirection scheme designed to lead users to malicious content. The ML classifier strongly indicated maliciousness, and the presence of numerous external links points towards a phishing or redirection attack.

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://airportvan.rentals/uploads/1/3/0/3/130379210/130379210.html#wii+remote+charging+station+instructions
    • http://ocd-militaria.com/uploads/1/3/0/6/130639719/xumidapudagesa-zosejik-ralilo.pdf
    • http://theboldestguy.com/uploads/1/3/0/5/130550721/5027982.pdf
    • http://sapphiremaidcleaningservice.com/uploads/1/3/0/7/130740224/1356.pdf
    • http://madamxarts.com/uploads/1/3/0/6/130639360/wawejuzam.pdf
    • http://janegreen305.com/uploads/1/3/0/5/130550901/2422603.pdf
    • http://azinbuild.net/uploads/1/3/0/2/130274305/sukediwug-samuz-veliregalepa.pdf
    • http://winebarrelwonders.com/uploads/1/3/0/7/130738543/8078666.pdf
    • http://josesalgadoinsurance.com/uploads/1/3/0/7/130739316/2305431.pdf
    • http://multitechnrj.net/uploads/1/3/0/2/130287454/tugowetosu-xadijogirefuli-lidalate-vagobu.pdf
    • http://gpathletes.com/uploads/1/3/0/4/130488294/zedej.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_off00006ada.bin
21561072d84ca06ca8365b3b6bfbb86c57128893828527bc4ca788c534c9575d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADA 8648 bytes

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