Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f8380072ee05866…

MALICIOUS

PDF

77.0 KB Created: 2021-03-10 00:46:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: b7b0708217b7e183d25b8ae7e4fc1e80 SHA-1: 49836cc63b94977745a0d970695abaee5dd08032 SHA-256: 7f8380072ee05866f10fa701f427af4a7e129625c2c3a2d6b3bed5a8878f54db
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL `https://druttle.ru/strik?utm_term=my+papa%2527s+waltz+poem+analysis` suggests a phishing or credential harvesting attempt, disguised as a poem analysis. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards malicious content delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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=my+papa%2527s+waltz+poem+analysis PDF link annotation
    • http://xidufefonudug.sportsontheweb.net/how_to_program_suddenlink_remote_to_onn_tv.pdfIn PDF document text
    • http://bikomowaxibujoj.medianewsonline.com/the_road_to_el_dorado_tamil_dubbed_movie_download.pdfIn PDF document text
    • http://kekijojovif.sportsontheweb.net/biology_notes_class_12.pdfIn PDF document text
    • http://jufanurozud.getenjoyment.net/une_autobiographie_agatha_christie.pdfIn PDF document text
    • http://zagodutaf.getenjoyment.net/ikea_malm_king_size_bed_frame_dimensions.pdfIn PDF document text
    • http://kudusakepupa.sportsontheweb.net/nevonide.pdfIn PDF document text
    • http://gumidaz.medianewsonline.com/68088668661.pdfIn PDF document text
    • http://rosutob.getenjoyment.net/10074969137.pdfIn PDF document text
    • http://mizifasurogik.mywebcommunity.org/61501316805.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/86bd0d81-4550-40b7-8418-e51dc0f25556/what_does_subscribing_with_twitch_prime_do.pdfIn PDF document text
    • https://s3.amazonaws.com/sudevejerifu/90967910946.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/wokejeloxitupuvepisabab.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/how_to_reset_airbag_light_with_scanner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eab51cd0-9b00-465c-b913-00a8bcb6700b/fabur.pdfIn PDF document text
    • http://pupagerirawax.myartsonline.com/sidama_amharic_english_dictionary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c56a3cb2-ac40-435f-926a-cd56cac3a8b5/2972095069.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccfe8f1d-a0cb-495e-b3eb-3abdb075ab58/716909678.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/2270629326.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00690cf2-a324-46cd-a5b5-bc32f8747f63/74130900404.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/badoo_free_chat.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/ziputofetemosofuxitisini.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/24885859868.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/vetuxilu.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/gangster_bengali_movie_hd.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_off0000ef46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF46 5152 bytes
SHA-256: 26d65bad2daec79b09b7e945514c281a2825b358b367f7fcfb99466bc1ae8044
font_01_sfnt_off000100ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100EF 11292 bytes
SHA-256: 8d3428b0f09788167aa04172fea51ffc59f9d21f902cdc2095d4215e1ccb7361

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