Malicious PDF — malware analysis report

Static analysis result for SHA-256 82c15bfe4f8164c6…

MALICIOUS

PDF

77.0 KB Created: 2021-03-14 09:16:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd14ee8c4cb201c780463577b59c78be SHA-1: 92844945de2feac60a852940b4a2fccd6d8c808a SHA-256: 82c15bfe4f8164c665f1eed6f7ac6037824f7ff2d63bbe1fa0f35c23b81438d7
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, masquerading as a digital music report. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=ifpi+digital+music+report+2011
    • http://zathkatow.xyz/libro_de_biologa_1_de_secundaria_2019_contestado5pkw1.pdf
    • http://onlinetyz.xyz/is_prostitution_legal_in_nevada_usahwe4x.pdf
    • http://pexulisinipev.sportsontheweb.net/begigo.pdf
    • http://silkhfig.bid/23743777842s5ozp.pdf
    • http://lnstagramverifiedsbadgeforms.com/chinese_drama_ostewuk8.pdf
    • http://bopolubolef.mywebcommunity.org/52057864722.pdf
    • http://likedizar.medianewsonline.com/woxinedurul.pdf
    • http://profapp.pro/97274051822gvwu4.pdf
    • http://lirinevewafa.mypressonline.com/11114985812.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/purufiz/ingles_babbel_apk_gratis.pdf
    • https://s3.amazonaws.com/jezaxojipevu/free_landing_page_template_with_contact_form.pdf
    • https://s3.amazonaws.com/benuka/expectations_in_relationships_worksheet.pdf
    • https://s3.amazonaws.com/gumagabu/bilawijimuzinikep.pdf
    • https://s3.amazonaws.com/pirosisob/tin_foil_boat_experiment_worksheet.pdf
    • https://uploads.strikinglycdn.com/files/d82166ea-3aaa-4a5e-88be-952bfc1c7122/honda_eu2000i_inverter_generator_for_sale.pdf
    • https://uploads.strikinglycdn.com/files/d842a102-07af-4a7e-8560-09efccaa872d/majupijazopuvigar.pdf
    • https://uploads.strikinglycdn.com/files/eb128e9b-bd63-45de-b2c6-854569f5be0d/lopi_wood_stove_ratings.pdf
    • https://uploads.strikinglycdn.com/files/9e7a8e62-7073-4b59-9694-97eb040c7462/kyocera_universal_print_driver_windows_7.pdf
    • https://uploads.strikinglycdn.com/files/5ef84d03-cc15-47bc-9c13-6d5906c77785/vuxuvikitigolum.pdf
    • https://s3.amazonaws.com/polexebuj/conceptual_physical_science_textbook.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebb3.bin
47dfecfa0d8ae7292643a9f5611a075be44505dcee341a1513152addab7b280b
pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB3 5736 bytes
font_01_sfnt_off0000ff37.bin
0bb7600bbebbb0801ba3d6ecdd159cfebba568d7d54d4fb119be55de9b237b14
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF37 11644 bytes