Malicious PDF — malware analysis report

Static analysis result for SHA-256 b67540abd4012eb9…

MALICIOUS

PDF

71.8 KB Created: 2021-02-19 00:41:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 8e66fa4437955692263b3e89e6eb7b84 SHA-1: c9422873b742ddb3b97c8271bac09cd1c52332f4 SHA-256: b67540abd4012eb915fa2f192ab6cd3a87abde2d42fc6c46b7ea5370b03e999f
66 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting or link farms, indicating a malicious intent to redirect users. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to lead users to external malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://baarspo.ru/strik?utm_term=used+huskee+lt4200+for+sale PDF link annotation
    • https://pidakulosa.weebly.com/uploads/1/3/4/3/134391257/gurakobunefupapo.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/iacVieF/65139522114.pdfIn PDF document text
    • https://cdn.sqhk.co/jofijoju/jjbUe30/real_steel_movie_song.pdfIn PDF document text
    • http://redtea.space/gezupupebuzunupitudevuwopb836r.pdfIn PDF document text
    • http://titanovyi-filtr.ru/wixobilubukyvncu.pdfIn PDF document text
    • http://smeshnoykir.space/mejixobuwu7mpjt.pdfIn PDF document text
    • http://habercigo.com/simerimomopimujivawmxbrr.pdfIn PDF document text
    • https://cdn.sqhk.co/pujazojiwixi/hh9xUgc/tugifevo.pdfIn PDF document text
    • http://dreamingdeveloper.com/moxikitevuvudirimoyjan3.pdfIn PDF document text
    • http://13millions.store/deoband_weather_reportbg78t.pdfIn PDF document text
    • https://puzomukasudugun.weebly.com/uploads/1/3/4/8/134865935/d64041.pdfIn PDF document text
    • http://lnstagaram-verifiedbadges-from.com/zombie_diary_2_hacked_version00cwz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://buwomonemagup.epizy.com/numegavidiximebot.pdfIn PDF document text
    • http://vovivufevalo.rf.gd/39174367598.pdfIn PDF document text
    • http://nokudumufax.rf.gd/wazeloviwiril.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d866.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD866 5412 bytes
SHA-256: b3ed1ad2d1ed94b09b8b734aa785fffd059aa06256850cf0fb52593e3f8432d1
font_01_sfnt_off0000ead0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD0 11184 bytes
SHA-256: 087c7b69c6cc56f93833cd6d0c4749dfc3dc6acd6710f584fa2fa8d13352e2c2

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