Malicious PDF — malware analysis report

Static analysis result for SHA-256 82f0368557750874…

MALICIOUS

PDF

80.4 KB Created: 2021-06-01 15:33:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 9bc69adc8c48ee163d31b9766e18c7ce SHA-1: d887f9465e69bb7ef988098145bca5db4104747f SHA-256: 82f0368557750874b647f56e61550061040dcc6ca0865fc2c5bbc62d1b0d394c
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 website associated with phishing. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or credential harvesting. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users 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://inwebjor.ru/pbw?utm_term=reading+comprehension+passages+with+questions+and+answers+for+high+school PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365649/normal_602f437ebb9bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481170/normal_5fe69bdcd9c96.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/d61c8738-9ed1-4a45-ae61-14fdcb5cd08a/behringer_reference_amplifier_a500_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/580bcba5-4bb6-4329-b935-5f1fa389d7b1/patududotedisibukib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d86f8b57-b767-40f0-92b5-53fbe253b407/40152312571.pdfIn PDF document text
    • http://noxixap.pbworks.com/f/gunawajonapekotapak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07ed4600-b9c7-4c23-ba26-2a2d5830a52f/bodas_de_sangre_federico_garcia_lorca_genero_literario.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/336e96de-7705-4883-b85b-2dfea9dafb27/fallout_4_best_melee_weapon_all_dlc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c7afa73-92c6-490d-86d5-a625c3f42597/zedupuradabijexu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1780edd5-082c-49b1-a2d4-9e34cac2a834/28837554054.pdfIn PDF document text
    • http://visetululiv.pbworks.com/w/file/fetch/144423312/what_does_rikki_tikki_tavi_represent.pdfIn PDF document text
    • http://kedetuwi.pbworks.com/f/how_to_refill_a_stanley_staple_gun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a418fa11-26ce-4284-a1a5-a35795f055ca/33269448158.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1defa3c-2933-46a8-a27b-53188867e989/how_much_does_a_new_pair_of_glasses_cost.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/217164e1-09eb-4216-a46c-e51d098b7e7f/konotefafomobanafuxafenu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3dc944d7-5b8d-47de-91d5-b29cc934f2ff/bipogemanexu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76a1fa6c-a57a-4bf3-8283-373a50dd300c/21072802882.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c2d4286-5a3d-4401-9fc2-14e93dbb882b/66325290624.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be16ff16-ebc2-410a-9fcc-e874fcc5ea3e/lojizapafikusuguluninilo.pdfIn PDF document text
    • http://wiwedano.pbworks.com/w/file/fetch/144421182/rubem_fonseca_feliz_ao_nuevo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5de730a4-65e6-49cc-9bb2-ff57b3e2bb3b/707472668.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_off0000fac8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC8 5792 bytes
SHA-256: c341d98c143bbe71ffac2c52a5cccae63761f46557df6bdfaa0d59f2a032ceaa
font_01_sfnt_off00010e72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E72 10900 bytes
SHA-256: 7e92bd4a67116f6ccb6645d61a6b9992ca40b15cf18838a418cd389f86c67750

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