Malicious PDF — malware analysis report

Static analysis result for SHA-256 29deba8aca809898…

MALICIOUS

PDF

82.6 KB Created: 2021-03-07 04:40:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5991e81cb07bb12a79223f3bf43ba11e SHA-1: 72c5386f607e3e01e1d85199e3cb013b66eabe6e SHA-256: 29deba8aca8098983a407b061bc64567c034783333dad0a08ea107a1db54707c
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://kuzutuzo.ru/award?keyword=cpu+parts+and+functions+ppt PDF link annotation
    • https://sawamamuwez.weebly.com/uploads/1/3/5/9/135992332/477941.pdfIn PDF document text
    • https://cdn.sqhk.co/dejenuluzew/mhbF7jg/88278434967.pdfIn PDF document text
    • https://cdn.sqhk.co/rovukupovumo/kjg13if/icarus_starship_command_simulator.pdfIn PDF document text
    • https://pixipemojawipe.weebly.com/uploads/1/3/4/4/134459682/2710915.pdfIn PDF document text
    • https://cdn.sqhk.co/kilatelazobe/zB2gg1L/templar_battleforce_rpg_2._7._3_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/jebozibiru/7icLhau/earn_to_die_3_exodus_hacked.pdfIn PDF document text
    • https://cdn.sqhk.co/suxavawudomo/bFjfifc/notepad_plugins_compare.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/gycQbup/28783101024.pdfIn PDF document text
    • https://cdn.sqhk.co/xawodoze/k7XhcxM/88680289413.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/lekavikuzumopinenanegaraj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72d725e4-39e0-43ed-91f6-e74ee70f33d1/jibavivuninasinal.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/number_theory_theorems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5393459-0120-4c04-9c1f-002ab2c46e38/daftar_harga_mixer_yamaha_mg124cx.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43834346-3949-4ced-b689-a822a2331680/why_is_my_samsung_front_loader_leaking.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9788498d-0de6-49e8-8ad5-1df845ba780a/lalufosonorupawobudilog.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_off0001098f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1098F 5024 bytes
SHA-256: 764087a74f5f00a975d54c4b9eaf08395c3ab477fe319730cfc5ff30cd934e54
font_01_sfnt_off00011ab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AB0 10184 bytes
SHA-256: 4f0abf18a392c5db15507ddb06def8f62c42a2d038b6164622af85a5299d92b0