Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b296a6ebad17d4b…

MALICIOUS

PDF

77.1 KB Created: 2021-03-09 04:35:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 65df18aa40c0730a49b105bd5a622843 SHA-1: d67e8014d9bb519d6517ee7ee62a5d8966ad39e2 SHA-256: 6b296a6ebad17d4b7adb682e8b99ee8e34cc3c30043ff06c911e7b035d93477d
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high probability of malicious intent. The presence of an external URI pointing to 'jumiwimov.ru' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI are indicative of a phishing lure, likely intended to download a second-stage payload.

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://jumiwimov.ru/strik?utm_term=stihl+ms180c+carburetor+adjustment PDF link annotation
    • http://akvatehnika74.ru/tamil_horror_movies_isaiminiv3jgq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410459/normal_6040f12deea70.pdfIn PDF document text
    • http://timecodes.net/genetic_disorders_ppt3u439.pdfIn PDF document text
    • http://goodsun.space/ibanez_gsr200_3_knobsnroxy.pdfIn PDF document text
    • http://sidufapas.mywebcommunity.org/a_wrinkle_in_time_movie_questions_and_answers.pdfIn PDF document text
    • http://megalit-korolev.ru/9188743041403lad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412174/normal_602574801693a.pdfIn PDF document text
    • http://help-copyrightviolationhelpcenter.com/736160700734m6s4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472774/normal_60133fe7708e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493282/normal_602d64143fa48.pdfIn PDF document text
    • http://inostrana.com/xivovijajovaritutoja6qa3i.pdfIn PDF document text
    • http://mon-cmb.best/66962303818cprv9.pdfIn PDF document text
    • http://kikababono.mywebcommunity.org/tamopima.pdfIn PDF document text
    • http://sevoxotedeki.medianewsonline.com/learn_english_app_for_windows_windows_10_free_download.pdfIn PDF document text
    • http://nulatapukedu.scienceontheweb.net/free_standing_carport_plans.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418972/normal_600a535866f55.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pekatikisuruki/63334824841.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/new_handbook_of_business_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f726d01e-0b13-44ea-b1da-203576842ebb/91457492663.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/tazugonimejebe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9889183e-8079-449d-85e2-57c9b9a0ced8/werabozaxejaxisabudoz.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/cavidades_del_corazon.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/6248365681.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a05acdc7-9167-47bc-96f2-c190df717673/74761343481.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_off0000f053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF053 5884 bytes
SHA-256: b11a085fa2f48325403afdc4f1d49f6cea2cc24093cb79de606215591f8bc6a8
font_01_sfnt_off00010432.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10432 10332 bytes
SHA-256: ebb492e9ebed7731cec0a6964d6dd0e8f0f96c2d51362b0f88ced1e29ef3fbc2

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