Malicious PDF — malware analysis report

Static analysis result for SHA-256 66f61158a2ac86c3…

MALICIOUS

PDF

71.3 KB Created: 2021-03-16 08:33:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2b8eca0eba5fd69bf076f6dc8e0d265c SHA-1: be6fb8612615c49d0f1ec0217a2792ef11247580 SHA-256: 66f61158a2ac86c3165145688d60595a16b263ac5403a4aac591acc2f87fa7b8
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lead the user to a malicious website or download further malware. No scripts were extracted, but the presence of external URIs points to a common phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://vilenefex.ru/wix?keyword=hanzo+guide+2020+ml
    • http://securityverifiedservices.com/fudovunidadasabujutiqal7b.pdf
    • http://sosyaltakipcipanelin.com/gemedikenfroai.pdf
    • http://lady-bug.club/tower_defense_warframex9zr4.pdf
    • http://inter-kalinka.ru/free_lost_bubble_game_for_pcctm3e.pdf
    • https://cdn.sqhk.co/vapumojemov/Fhegghf/fifusekatadenedogoro.pdf
    • http://gojavodevagajuw.mygamesonline.org/cetoacidosis_diabetica_pediatria_2020.pdf
    • http://bibuzikufaje.mygamesonline.org/529886590.pdf
    • https://cdn.sqhk.co/jasorevujoxu/MTBp3gi/bowling_speed_measure_app.pdf
    • http://pejelurim.getenjoyment.net/how_to_render_davinci_resolve_16.pdf
    • http://winfreeiphone.xyz/best_nasheed_2020_offline_action_gamess7efc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/likadojivivofu/xosunefifesotenerimeke.pdf
    • https://s3.amazonaws.com/jotogorurekuro/pronouncer_guide_2019.pdf
    • https://s3.amazonaws.com/kudowo/53257702845.pdf
    • https://s3.amazonaws.com/xomudufe/72908917121.pdf
    • https://s3.amazonaws.com/rujabepifar/tojurolirixotegokeruzarus.pdf
    • http://faxiruvud.myartsonline.com/30379042960.pdf
    • https://s3.amazonaws.com/xugigabitulu/25669799141.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_off0000db47.bin
df61e3f722e925e8a50984e92d2482bf62e2bedc4f74dd96d07bdad77cb182d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB47 5156 bytes
font_01_sfnt_off0000ecc8.bin
a073ffffb473e60450f32575fce50e73f3b57f1a6a45f347ebb1cec4813d29c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECC8 10428 bytes

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