Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e22685b1497cb43…

MALICIOUS

PDF

79.9 KB Created: 2021-03-20 08:44:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89ec24cdf0a23f6c1734c2cd1489f4cf SHA-1: 145fc0e227242e7b1ce514d5ec5aab795979edb5 SHA-256: 9e22685b1497cb437ebd21893a1377847921e0c5cd1cf00ddc2c0d7917f159b6
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were explicitly extracted, the presence of an external URI suggests the document is designed to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dafemum.ru/strik?utm_term=quadrafire+mt+vernon+igniter+problems
    • https://cdn-cms.f-static.net/uploads/4423752/normal_602b23a2a1275.pdf
    • https://cdn-cms.f-static.net/uploads/4382429/normal_600c8516dfeb1.pdf
    • https://cdn-cms.f-static.net/uploads/4414487/normal_5fe756056ff03.pdf
    • https://cdn-cms.f-static.net/uploads/4489844/normal_5fe9eeda27c8e.pdf
    • http://vasuxarogaxatix.iblogger.org/vurarubuzajijiko.pdf
    • https://tapabuwenoripop.weebly.com/uploads/1/3/4/9/134904450/9b8cd1aa.pdf
    • https://cdn-cms.f-static.net/uploads/4449014/normal_600f730a1f09f.pdf
    • https://cdn-cms.f-static.net/uploads/4402252/normal_601fcf0b69e4e.pdf
    • https://static.s123-cdn-static.com/uploads/4418368/normal_5fdfa09bb8deb.pdf
    • https://pitefomut.weebly.com/uploads/1/3/2/6/132682610/zoluwovetamewudegez.pdf
    • https://zokutiwako.weebly.com/uploads/1/3/0/8/130873782/modowopuraxe_vuwopajuf.pdf
    • https://ruxakidefo.weebly.com/uploads/1/3/4/1/134131713/caffb32cae9d05b.pdf
    • https://static.s123-cdn-static.com/uploads/4501993/normal_5fe303393399f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nujufotesu.epizy.com/make_your_own_simple_machine.pdf
    • http://muburenimigalu.epizy.com/vapirekalaramidamepiva.pdf
    • https://uploads.strikinglycdn.com/files/60e7e947-00ef-4190-a85c-f3295e493291/60691390929.pdf
    • http://mowumaja.epizy.com/lalabuxezabud.pdf
    • http://fukekixejup.epizy.com/63831311349.pdf
    • http://tenasupufowok.epizy.com/jinja2_template_flask.pdf
    • http://kosinatatit.rf.gd/89292792012.pdf
    • http://sabasil.epizy.com/calentador_solar_de_agua_casero.pdf
    • http://xupafokivudaked.rf.gd/article_19_2.pdf
    • https://uploads.strikinglycdn.com/files/b4347011-26a6-4371-9b39-bdaac0b13d17/g_shock_watch_set_time_5081.pdf
    • https://uploads.strikinglycdn.com/files/de42d877-8c9d-46db-a9fb-f8e602d70376/how_to_disable_seatbelt_alarm_ford_ranger_2014.pdf
    • https://uploads.strikinglycdn.com/files/2498ab96-12fd-40c3-af08-82cea24b297f/how_to_study_for_ib_physics_hl.pdf
    • http://bedozep.rf.gd/whatsapp_status_app_for_iphone.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f948.bin
2ce03db8d47c95448530f7f1a2b8f194d687f61c557d54ad67b7cb8086c92692		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF948 5620 bytes
font_01_sfnt_off00010c50.bin
4d66ae107a4acdb446cae38402c35e2365b75a183ed966722235d05befab16b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C50 11080 bytes

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