Malicious PDF — malware analysis report

Static analysis result for SHA-256 b608ac58c0bb0d42…

MALICIOUS

PDF

87.7 KB Created: 2021-03-13 16:36:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f3e175b1daa039399d979ac43dfff10 SHA-1: ee7f14bc6785c805fb86445d57d89f2dc66e8b9b SHA-256: b608ac58c0bb0d4209bab8c8f348d2584937ff53ffcb8ca2532904273473babb
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 search result. ClamAV detection and ML classification strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of an external URI is a primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://lozipotod.ru/aws?utm_term=partial+differential+equations+matlab+code
    • https://cdn-cms.f-static.net/uploads/4468536/normal_6024ce985bad2.pdf
    • https://cdn.sqhk.co/mojuzizimu/f9ziegg/time_jumpers_band_nashville_tn.pdf
    • http://wiwovurezibaso.getenjoyment.net/definition_of_sexual_and_asexual_reproduction_in_plants.pdf
    • https://cdn.sqhk.co/naxupowu/gOGkyjh/golf_clash_tommy_golden_shot_cursed_swamp.pdf
    • http://tapasin.sportsontheweb.net/cadena_trofica_definicion.pdf
    • https://static.s123-cdn-static.com/uploads/4392451/normal_5ff86fb555510.pdf
    • https://cdn.sqhk.co/gobejilu/ChfCDtZ/86577389208.pdf
    • http://kirakexig.mypressonline.com/nivawepojulawesenelupiba.pdf
    • https://cdn.sqhk.co/jabosuve/ktjjmij/rumble_racing_app_download_for_android.pdf
    • https://static.s123-cdn-static.com/uploads/4401558/normal_5ff1e6bbd6c3e.pdf
    • http://juraxoxodas.scienceontheweb.net/33479413379.pdf
    • http://velakisolafagi.22web.org/36568895501.pdf
    • http://faxusigeroles.sportsontheweb.net/non_biodegradable_polymers.pdf
    • https://cdn.sqhk.co/fiwujumejuf/hgU4Thd/32773618192.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zepifudoxapo/blossom_blast_saga_apkpure.pdf
    • https://uploads.strikinglycdn.com/files/9dc20685-803e-40f2-8c85-29af4f613b92/senuv.pdf
    • http://jefevuxivux.epizy.com/agathiyar_tamil_film_songs.pdf
    • https://uploads.strikinglycdn.com/files/49c6977a-f13f-457d-9230-17ae7ec511a0/best_machine_learning_algorithms_for_price_prediction.pdf
    • http://lavuradisaxel.epizy.com/jivizafedafalegulikalejo.pdf
    • http://walogoke.epizy.com/how_to_fill_out_usps_customs_declaration_and_dispatch_note.pdf
    • http://fezivepe.rf.gd/zupafupekoninumujofo.pdf
    • https://s3.amazonaws.com/ziwuvijevo/astrology_in_tamil_free.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010047.bin
c58111500541cfe430ea3e5b5adf8a6b84e43bd6f26a5725ca3d351aa4f04987		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10047 5436 bytes
font_01_sfnt_off000112a3.bin
54ef69686158b007c4e1b1c42a9cf309a2f21a2b15b666c18018baae75a4d995		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112A3 12096 bytes
font_02_sfnt_off00013c72.bin
c43c81af3addadc619f1b50b0eb79006c69e58cb90abf43f7a5fbd940e22698c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C72 16060 bytes

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