Malicious PDF — malware analysis report

Static analysis result for SHA-256 d67e7fa8d0cfed7a…

MALICIOUS

PDF

70.9 KB Created: 2021-03-29 18:30:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa1ba32caa78d114b24c52cc7a743faa SHA-1: 5f94972b778c79ad548baf1e8da2890f527515c3 SHA-256: d67e7fa8d0cfed7a7dc704c49cda7b6108afcd7eb06a1c8b244a73e05b777847
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, specifically pointing to 'https://dugedepap.ru/strik?utm_term=macbeth+act+4+guided+reading+questions'. This URL is flagged as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, suggests an educational context ('Macbeth act 4 guided reading questions'), likely a lure to encourage clicking the malicious link. No scripts were extracted, but the presence of a malicious URL within a PDF is a strong indicator of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dugedepap.ru/strik?utm_term=macbeth+act+4+guided+reading+questions
    • https://cdn.sqhk.co/dudumadopole/qjiiwpt/drag_n_boom_apk_mod_download.pdf
    • https://cdn.sqhk.co/zavilisuga/IXlngfA/wenezumesebi.pdf
    • https://cdn-cms.f-static.net/uploads/4380858/normal_603ce181b7e3f.pdf
    • https://cdn-cms.f-static.net/uploads/4449789/normal_603200ff74309.pdf
    • https://cdn-cms.f-static.net/uploads/4372373/normal_601d5ebee03fb.pdf
    • http://wajadadajevebab.22web.org/folenubujak.pdf
    • https://cdn.sqhk.co/xufojidaju/aFji3dy/75755787537.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/benubapopikaj/geparagitiduzav.pdf
    • https://s3.amazonaws.com/lorifumofelu/quadratic_simultaneous_equations_ppt_tes.pdf
    • https://uploads.strikinglycdn.com/files/970528e6-3170-402c-90e2-36292efd74f0/negafubesekuk.pdf
    • https://s3.amazonaws.com/xirixepo/greek_mythology_monsters_names_list.pdf
    • https://uploads.strikinglycdn.com/files/485fab3f-73b7-42cc-abc8-1e2394f7de23/aroma_10_cup_rice_cooker_and_steamer.pdf
    • https://uploads.strikinglycdn.com/files/4cf4dece-6471-461a-93d4-94f2781152e5/dominos_ranch_dressing_recipe.pdf
    • https://s3.amazonaws.com/xijalovelokolep/lemony_snicket_series_of_unfortunate_events_books.pdf
    • http://visowad.epizy.com/kavobalezetigu.pdf
    • https://s3.amazonaws.com/baxegezivumi/join_two_worksheets_in_tableau.pdf
    • https://uploads.strikinglycdn.com/files/65c317f6-0ce2-4489-95f0-662c6c6a2ddc/letidaja.pdf
    • https://uploads.strikinglycdn.com/files/39c0664a-d363-4f16-b140-35d07c12e55a/vumamefadajonofakazukuve.pdf
    • http://xoxasosopu.epizy.com/77669368802.pdf
    • https://uploads.strikinglycdn.com/files/0c2c6aae-eac6-43ab-90b0-d7383180bac3/xodilonijam.pdf
    • http://rotaduwifomol.rf.gd/absenteeism_research_paper.pdf
    • https://uploads.strikinglycdn.com/files/37a5a235-9575-4682-b6fc-3021eb1aad2f/el_poder_esta_en_la_oracion_oscar_medina.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_off0000d7c4.bin
99efaa17d0aa5efb0a79a678194491a05e3f507de47dd1cd51194f501bd2d1b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C4 5528 bytes
font_01_sfnt_off0000ea8c.bin
33b8fad490490c5f42a4d093a8f95f2f251cf8db8afeb60c2d0198cba86b3452		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA8C 10464 bytes

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