Malicious PDF — malware analysis report

Static analysis result for SHA-256 7462e5ccaee81b58…

MALICIOUS

PDF

79.9 KB Created: 2021-03-25 11:44:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71f30dba2d4a3c80cdba5c824f8f3f71 SHA-1: 2ee3b99955ccdcab942b4638fbdf963778170485 SHA-256: 7462e5ccaee81b5893ff212c9210f4a8e705e6429ef310f9559d2ba450ad3b65
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 URL that offers a 'free download' of a numerology book, which is a common lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://kuzutuzo.ru/aws?utm_term=the+complete+book+of+numerology+pdf+free+download
    • https://cdn.sqhk.co/xegunorasu/dbhajb8/76830155580.pdf
    • https://cdn.sqhk.co/nomelafu/eGjihcB/arma_tactics_apk_rexdl.pdf
    • http://menbp.online/blood_toil_sweat_and_tears0yv07.pdf
    • https://cdn.sqhk.co/nigudovowa/hiheghh/77926285822.pdf
    • http://cpskras.website/65062512862i665y.pdf
    • http://bcpzonasegur4viabcp.com/ditexozamavabawafuko1kmm0.pdf
    • https://cdn.sqhk.co/nuvaratuji/JXUrhif/porovapa.pdf
    • http://stroy-level.ru/tazumiwixuna8kxeh.pdf
    • http://genusadnlo.space/hmh_integrated_math_2_practice_workbook_answers4ig9v.pdf
    • http://botefedej.sportsontheweb.net/sesizizoninure.pdf
    • http://kixurox.getenjoyment.net/etiologi_dermatitis_atopik.pdf
    • http://usechambre.xyz/elementary_linear_algebra_howard_anton_sladerryp4k.pdf
    • https://cdn.sqhk.co/tuzijaxab/j7B9Ejf/40034347919.pdf
    • https://cdn.sqhk.co/voravaxa/iaehdih/associate_hoopp_capital_partners_salary.pdf
    • http://jobauthor.online/mebevabobt6wj.pdf
    • http://online-bestshop.xyz/evenflo_chase_plus_harness_booster_car_seatynb4b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/016de830-72d0-43c6-b652-8a5bc8def502/reading_comprehension_test_for_grade_3_philippines.pdf
    • https://uploads.strikinglycdn.com/files/36bbd005-22c3-4910-93da-08497034655e/how_to_reset_dlink_camera_dcs-932l.pdf
    • https://uploads.strikinglycdn.com/files/9f5d271d-55bd-48b0-b132-2d9d8b85dd2f/18650358190.pdf
    • http://zujakogi.onlinewebshop.net/75555879527.pdf
    • https://uploads.strikinglycdn.com/files/ad3038de-b0d9-4ac5-bc48-b0a4943af4c1/xadeguxitofu.pdf
    • https://uploads.strikinglycdn.com/files/d31c96de-b053-4e00-8609-cd01515085e6/7238691314.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb79.bin
a6e9003398444a054af35baa903e316a8d9f603bb6cfa5a3ca8736fd7d65bd95		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB79 5572 bytes
font_01_sfnt_off0000fe56.bin
1152fa021e6f682a7931cda955909d1cf5f7cf04441c00e950f07bbacd52a732		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE56 10884 bytes
font_02_sfnt_off00012388.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12388 4324 bytes

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