Malicious PDF — malware analysis report

Static analysis result for SHA-256 c631a964aa0574b4…

MALICIOUS

PDF

79.2 KB Created: 2021-06-07 13:35:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 49bbc01f305aeab6ba9dc8e6a53ad15e SHA-1: a8a4d324a9db74b8244b9b31cd326b6083fb795a SHA-256: c631a964aa0574b42299429a1b3840663b54dd153d6fbe6cca9521f7e2516de2
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://inwebjor.ru/pbw?utm_term=learn+how+to+drive+a+car+automatic PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4464539/normal_6022c33a329ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368998/normal_606935e744bc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457848/normal_6069f45a325ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456122/normal_60bd2d2aacc62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384821/normal_604b3c744c51f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388048/normal_605f764a7b77d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380707/normal_5ff45663f3d75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377408/normal_5fda553a93772.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://uploads.strikinglycdn.com/files/f2f31b58-e9ab-4d7c-8ada-1a14e3e20eae/pakurizunewa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9341812-43a1-4126-b0a5-91ede0daf6a1/como_hacer_linea_del_tiempo_para_nios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aac5f00f-71af-401c-8270-0c6fd7224474/how_to_use_presonus_audiobox.pdfIn PDF document text
    • http://zolunegoli.pbworks.com/w/file/fetch/144632094/minecraft_hack_client_bedrock_1.16.201.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf50e07f-b910-4504-95b8-b6e3da8d9bea/88415781077.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f5115b0-3790-46f3-a6ed-bb1a471b8c34/who_played_gavroche_in_les_miserables_25th_anniversary_concert.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/177d1339-eddc-47e2-91b4-40055936b785/reporte_de_averias_telefonicas_ice_costa_rica.pdfIn PDF document text
    • http://taxoxuf.pbworks.com/f/gta_liberty_city_cheats_apk_obb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2234349a-4aee-4d66-b83d-2d4924c20b38/kobesofiludinukuxapeg.pdfIn PDF document text
    • http://ximusutoj.pbworks.com/f/vesuwukokopomiwale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6390001b-a29c-4416-bf8c-cb978d496dce/ditivitupom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3be9bb52-5453-4bc0-9013-2595b687d8eb/46465744268.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f3f7d73-c0ff-4d68-8777-0bdb858dabca/jasuwojuvepamu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f61a05f8-2562-4204-9270-bd4248425f9e/whirlpool_model_wrf560seym05_ice_maker.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED3A 4944 bytes
SHA-256: 7aaa5d5fe93b23a11995870705ab23127d43d92c53cace2f4bc806b2295d7280
font_01_sfnt_off0000fded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDED 10444 bytes
SHA-256: f3bf96d9058e1cf3666efa35f82f1c647220e7fe3305f3ce6a6924adb2c7598c
font_02_sfnt_off0001215e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1215E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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