Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d751e44d4c4b043…

MALICIOUS

PDF

77.6 KB Created: 2021-02-18 08:18:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: b7301b1bb68f1cd2c3cd9e4471d14f39 SHA-1: 8136c1cbcd2d2a545e465f65add091850c251f2c SHA-256: 7d751e44d4c4b043a4aeccbb8f5e2801365358585011fae5058dd2ec59cd77b1
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to a popular drink's calorie content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery.

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://jottigo.ru/strik?utm_term=how+many+calories+in+a+sonic+blue+raspberry+slush PDF link annotation
    • https://cdn.sqhk.co/difakezil/gdgjibF/dubowibetexomikopazirew.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485718/normal_5fed20f0aca11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467945/normal_6015f174e47a1.pdfIn PDF document text
    • http://lnstagramverificationbadge.com/talking_tom_candy_run46swg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470223/normal_6024b9d759096.pdfIn PDF document text
    • https://cdn.sqhk.co/dikizumi/kijJjii/anonymous_chat_room_app.pdfIn PDF document text
    • http://gonugotez.22web.org/background_scenery_images_free.pdfIn PDF document text
    • http://revujutipisan.22web.org/sec_conflict_minerals_reporting.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486034/normal_600c6948dfb1d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/genukopapovixo/motorola_baby_monitor_mbp33xl_battery.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/animal_cell_culture.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/anti_spyware_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/bitiniguvozajimuwafaf.pdfIn PDF document text
    • http://masewab.epizy.com/14208537573.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/industrial_revolution_inventions_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/yakuza_kiwami_1_rina_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/bohemian_rhapsody_piano_solo_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/viewmodel_android_lifecycle.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B6 5268 bytes
SHA-256: 0bcd0d45b0e7f335dd17c30e865c9851f7891fd3dec2d79910ec905b4409d76a
font_01_sfnt_off0000f66f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF66F 10696 bytes
SHA-256: a0fd403d7e8d057600cabc22e0b2a51a71d24e5703e768636449f585f4e7acdb
font_02_sfnt_off00011ad4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AD4 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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