Malicious PDF — malware analysis report

Static analysis result for SHA-256 58af4fc9b527e791…

MALICIOUS

PDF

69.2 KB Created: 2021-03-09 22:21:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: ab854e8f13147629f38c11dfa5668345 SHA-1: 2402a4e25f48a320f9673c68e1c78cff14467b69 SHA-256: 58af4fc9b527e79189bb13f9e5a8d9c6d4a69d6a087ec6aec391adb6b5df745e
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'baarspo.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains text related to a 'divine mercy chaplet song', suggesting a social engineering lure to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://baarspo.ru/123?utm_term=ewtn+divine+mercy+chaplet+song PDF link annotation
    • https://cdn.sqhk.co/zatejurix/3jhWRvv/uptodate_free_access_code.pdfIn PDF document text
    • https://cdn.sqhk.co/gunonutib/eqAEjhp/76704858482.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388420/normal_60194f5366bf1.pdfIn PDF document text
    • https://cdn.sqhk.co/salavogi/Qjggfjb/15759625687.pdfIn PDF document text
    • https://cdn.sqhk.co/runenuti/awsFyEI/live_cricket_score_world_cup_2019_streaming.pdfIn PDF document text
    • https://cdn.sqhk.co/gefimiwotux/mhgohhQ/sd_card_app_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/labifikup/YUjgOge/50739973102.pdfIn PDF document text
    • https://cdn.sqhk.co/janawezexoj/Epxmiaa/ending_tenancy_letter_template_uk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457311/normal_5ff9308a175bb.pdfIn PDF document text
    • https://cdn.sqhk.co/zuvaworizon/ijSugju/40672833279.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372737/normal_60414c42909a8.pdfIn PDF document text
    • https://cdn.sqhk.co/pafitevet/g17qN07/back_to_sender_by_wusu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489838/normal_5fd97a5b56138.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/igiaigk/lightroom_presets_multiple_images.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/how_to_drawing_book_for_beginners.pdfIn PDF document text
    • https://cdn.sqhk.co/zogameva/2QiiXii/93947302202.pdfIn PDF document text
    • https://cdn.sqhk.co/sawibevas/jajbHCs/aristocrat_slot_games_for_pc_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457298/normal_5ff8287bd3d42.pdfIn PDF document text
    • https://cdn.sqhk.co/nejijilo/fgdhgjb/rope_pole_pruner.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/d901fce0-bf7a-431f-894e-6a06a5495a90/baxegetatofibaderolo.pdfIn PDF document text
    • http://tofujuwo.onlinewebshop.net/jiwizopaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a407b1c1-e860-436d-95e7-823474315372/me_before_you_book_series_order.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d2dc604-4dff-4d02-8e78-6c9b24df12ee/mibaxurafixonave.pdfIn PDF document text
    • http://xejobutek.onlinewebshop.net/concrete_mix_design_submittal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95b10dbf-ab17-49f7-befc-fb5aba06cba0/rapivewotujazirefanu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17aba3bb-f81c-4801-a1e9-ccfab006a735/what_is_burger_kings_vegetarian_burger_made_of.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_off0000d0d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0D3 5696 bytes
SHA-256: 57d4b5643599789094a531b0edf1739897abf1323fd82d8d8c3d5648837c3b97
font_01_sfnt_off0000e42d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE42D 10316 bytes
SHA-256: bb4e445b655429196c0ae4b94fe121e25b1d8243ab9305d594d644867bc5a09a

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