Malicious PDF — malware analysis report

Static analysis result for SHA-256 30ed3d871647d2be…

MALICIOUS

PDF

33.6 KB Created: 2020-05-13 13:55:46 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 247ce9fc3d8ca9d823130fe12d293fa0 SHA-1: b08080ebfc3b75401135f9cb030c658a6c7d4930 SHA-256: 30ed3d871647d2be15bafd20d2fe124cd5c87652e986426a8c107e5927d77a5c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body suggests a lure related to 'Adobe indesign cc tutorials for beginners pdf', which is likely a deceptive title to attract clicks. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent. No scripts were extracted from this sample.

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://scottsmusicco.net/uploads/1/3/1/4/131437261/131437261.html#adobe+indesign+cc+tutorials+for+beginners+pdf
    • http://collinspoolsde.com/uploads/1/3/0/6/130620673/xezexes.pdf
    • http://varmaccounting.com/uploads/1/3/0/3/130312996/buzexin-xoporevupa.pdf
    • http://villadecardenas.com/uploads/1/3/0/9/130969439/9270404.pdf
    • http://h-makers.com/uploads/1/3/0/8/130813079/pataso_bajivobuke_lokovewebewafe.pdf
    • http://carldemizioappraisals.com/uploads/1/3/1/0/131070487/2895583.pdf
    • http://abcmountainbike.com/uploads/1/3/0/7/130775370/dojorivoliwijam.pdf
    • http://cjwalkerbooks.com/uploads/1/3/0/8/130814597/8dc41c7f5.pdf
    • http://deportpto.com/uploads/1/3/0/3/130323888/dagivepuxi-zazepojuz.pdf
    • http://loveawakeningwithin.com/uploads/1/3/0/5/130542736/a7ac562.pdf
    • http://angelsdinerfood.com/uploads/1/3/0/8/130874430/fenel_gatezigakulera_jajowibamenu_wupifina.pdf
    • http://aoc-pco.com/uploads/1/3/0/5/130551486/2e9c110d.pdf
    • http://travellyte.net/uploads/1/3/0/3/130313235/841487.pdf
    • http://genius-encel.com/uploads/1/3/0/8/130874019/384f93c.pdf
    • http://mydriwashonline.ca/uploads/1/3/0/2/130271201/9afc63.pdf
    • http://eirdesign.ie/uploads/1/3/0/5/130544781/faxediw-vibewabuk.pdf
    • http://januaryrosephotography.com/uploads/1/3/0/4/130436258/divimorewunu.pdf
    • http://carlthedog.com/uploads/1/3/1/4/131437515/61b3a1f211e.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_off0000595b.bin
9c1d2c0795bfd2913198be9d08701e6088e344d238beecfb23644d95c7ab5957
pdf-font-stream PDF embedded font (sfnt) at offset 0x595B 9712 bytes