Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cd120326a6ef712…

MALICIOUS

PDF

318.9 KB Created: 2021-03-11 12:16:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 220b7712b304375a65d4d27af1c7230d SHA-1: 607c67f435f704750b565685f00d5e0f2fc21160 SHA-256: 5cd120326a6ef7129965607756108962ffcfbb8de3e2f17a9305b975e23219fa
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to installing drum kits, which directs the user to a suspicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the embedded URI is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://druttle.ru/strik?utm_term=how+to+install+drum+kits+fl+studio+20 PDF link annotation
    • http://ziratonis.iblogger.org/full_hd_background_video_free.pdfIn PDF document text
    • http://bopolubolef.mywebcommunity.org/zalejerujanufozawuxer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500201/normal_5fd8cd732559d.pdfIn PDF document text
    • http://lubenoredeji.mypressonline.com/dosot.pdfIn PDF document text
    • http://tomidubuvizoja.iblogger.org/bobodigobuwep.pdfIn PDF document text
    • http://jepisafidezegun.scienceontheweb.net/how_to_fix_the_red_light_on_my_router.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413374/normal_6017f684e389b.pdfIn PDF document text
    • http://xupokaxe.medianewsonline.com/kuxedalexip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/01ded7e7-be4f-40b8-9b4b-dd247fbbb52d/how_to_make_a_homemade_generator_with_magnets.pdfIn PDF document text
    • http://godoxozipozav.epizy.com/zenitikaxa.pdfIn PDF document text
    • http://gujomodezeroj.epizy.com/28945137932.pdfIn PDF document text
    • http://zisukuvi.atwebpages.com/lovebanegunerufa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fc00406-8db5-4441-b58b-909de040514e/87711112864.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b377e27-66f1-49d9-a250-71b80e9810a7/41435103187.pdfIn PDF document text
    • http://beperedusewigu.epizy.com/telugu_action_movies_free.pdfIn PDF document text
    • http://vepitejususas.atwebpages.com/jolatij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c421c658-09d9-47b2-b43a-5b6d69903f36/virginia_health_and_safety_update_training_for_childcare_staff_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6a6b61c-2678-4a9b-80f6-ad3dbd19d9f2/when_can_you_book_disneyland_paris_2021.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5feba23d-8a24-440e-9447-4acd33617765/nabetowolinetelekag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8966403f-c30a-429d-a79e-185d0bc545be/jevokidijivilasubesifaxeb.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_off0004b25d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B25D 5444 bytes
SHA-256: 4ce627b426b63c3978a37235d21a8933a56f07ed50f7263c994da65b8084a04d
font_01_sfnt_off0004c4da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C4DA 11860 bytes
SHA-256: 1431701177b93056c9ed8a36bb5da0615f62736f290c3a495bf583360c2444d1

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