Malicious PDF — malware analysis report

Static analysis result for SHA-256 1422d5fd7cb8461e…

MALICIOUS

PDF

54.1 KB Created: 2020-04-12 03:57:41 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8f2f4b179377c8aec5bd32be248f4e9d SHA-1: b6bde2f15e03ad7adafd53a0e358edd8ce218574 SHA-256: 1422d5fd7cb8461e5871625d5c9c6b946eeff83cb167834c9fec5944210ac4c5
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, indicating it is part of a link farm designed to drive traffic to various websites. The document body text, though heavily obfuscated, contains a URL that is also listed in the heuristics as an external URI. The ML classifier strongly flagged this PDF as malicious, supporting the assessment that it is used for malicious redirection or phishing purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://topgunconstructionandconsulting.com/uploads/1/3/1/3/131384709/131384709.html#que+espacio+geografico+representa+el+mapa+de+espa%C3%B1a
    • http://mumeditation.com/uploads/1/3/0/3/130379232/2341647.pdf
    • http://langsenvietnam.com/uploads/1/3/0/4/130476671/nexikeluxelakemup.pdf
    • http://resourcecarewellness.com/uploads/1/3/0/2/130272979/f9caa3b.pdf
    • http://skgelectrical.co.uk/uploads/1/3/1/4/131437711/9584233.pdf
    • http://sprayalldaytan.com/uploads/1/3/0/7/130776779/1f2d1c.pdf
    • http://levelten.shop/uploads/1/3/0/4/130483417/21dc2119.pdf
    • http://heartsmileystar.com/uploads/1/3/0/7/130738528/5387342.pdf
    • http://southwesternaspengallery.com/uploads/1/3/0/6/130604579/4036735.pdf
    • http://amazingbiologysc.com/uploads/1/3/0/5/130544889/4bcf7ac.pdf
    • http://infinitemovement.org/uploads/1/3/1/3/131383954/tizejasokusozepaf.pdf
    • http://prettylittlethingsboutique.shop/uploads/1/3/0/8/130814874/mosetikel-kulewi.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_off00009de8.bin
6279ad4b4800561dda55a4967381e3ee5e99b07fb92114087981def6a864004b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DE8 13584 bytes

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