Malicious PDF — malware analysis report

Static analysis result for SHA-256 83c3ceb2c1406567…

MALICIOUS

PDF

81.7 KB Created: 2021-03-12 17:30:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed76f11a246d537d243e1795363e3925 SHA-1: 4510b92be31df5ab6b57c546bad805f4cc027f95 SHA-256: 83c3ceb2c14065678b02393243e2c02790f0a83d49e28a7ae82a9cc6409c9867
96 Risk Score

Malware Insights

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

The PDF contains an external URI pointing to a suspicious domain, likely intended to trick the user into downloading a malicious file. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the PDF content suggest it's part of a phishing or malware distribution scheme.

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://crophysi.ru/award?keyword=mapa+geografico+de+bolivia+pdf
    • http://100p-f.ru/nikirakujuzavelz7ar.pdf
    • http://ig-support-service.com/object_oriented_programming_principles_pythontcwp7.pdf
    • http://about-central.com/2000_ford_ranger_xlt_bed_dimensions3prox.pdf
    • http://cesaregaspari.com/touchstone_3_workbook_answer_key_unib8kz8.pdf
    • http://extrameets.fun/bade_acche_lagte_hai_episode_165ibs5l.pdf
    • http://bloomwithdeanna.com/gokavimomebifaretarodutijwaz.pdf
    • https://cdn-cms.f-static.net/uploads/4422643/normal_603bf1f9bc734.pdf
    • http://ketotreno.buzz/what_was_ancient_greek_religionjmgot.pdf
    • http://bosnoslovnoejelaniekupit.xyz/smart_voice_recorder_apk1r7ec.pdf
    • http://my-credit.info/57359886689namuu.pdf
    • http://tesupelaj.sportsontheweb.net/solo_guitar_chords.pdf
    • http://pixell.store/windows_server_2012_free_download_iso_64_bit_cracku02je.pdf
    • http://vivadoctor.ru/animacion_de_primeros_auxilios_para_nios_cruz_rojahhsu6.pdf
    • https://cdn-cms.f-static.net/uploads/4412377/normal_601999bf71c7d.pdf
    • http://fopekoriw.sportsontheweb.net/19662565355.pdf
    • http://iuts.space/libro_de_historia_5_gradosp3wm.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://488c2ff9-9ff4-499e-8f11-525115e20b22.filesusr.com/ugd/8aba0c_45df3b13adce46d8ba6413393e25d082.pdf?index=true
    • http://sipanokule.onlinewebshop.net/81014304383.pdf
    • https://6b9ff03a-ef48-417a-a14c-919df0f903d0.filesusr.com/ugd/f459ea_7ef65d8594f54c5d9fac4e5b0c9d750d.pdf?index=true
    • https://45f61934-b4a1-4335-a9e3-e142d9465b5b.filesusr.com/ugd/0dd040_5c0a08188f674d7b8a240b279a88059b.pdf?index=true
    • https://b6de9e3f-c562-4e05-b5ee-70895c8060ae.filesusr.com/ugd/3801ff_012b357fbee148d28488d37cc6ad130e.pdf?index=true
    • 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_off0000ff93.bin
9bc3eb032be6db1b55b012b098681a4556e36ca9acc00eb5dac5d416df41330d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF93 5352 bytes
font_01_sfnt_off000111e9.bin
da050f27bf050ce8e488446ed934a75b1b0cc9ffe23bbf587dd904e503763b15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111E9 11468 bytes

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