Malicious PDF — malware analysis report

Static analysis result for SHA-256 62c918af0e8b191f…

MALICIOUS

PDF

87.8 KB Created: 2021-04-26 08:55:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 16a1b55b1b605aa39e2a9dc79d9734fb SHA-1: b62e309551fada25f2b42b01025eed9603e67440 SHA-256: 62c918af0e8b191f965b4cf5e8538f24f47995717142adc73a4bcd2be71854b2
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains references to a product review and the authoring application, suggesting a social engineering lure. The embedded URI points to a suspicious domain, likely intended to host a malicious payload or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://zajinet.ru/strik?utm_term=gopro+hero+4+silver+review+youtube PDF link annotation
    • http://fufirewavit.getenjoyment.net/fawokanebarugorotefo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392861/normal_5fe62f0943039.pdfIn PDF document text
    • http://vudifabofugejij.medianewsonline.com/nilonub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379848/normal_606764fae0bbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410448/normal_601db81d0a2de.pdfIn PDF document text
    • http://fukuzowi.sportsontheweb.net/cisco_sg200-50_console_port.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411001/normal_5ffec22312c0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416939/normal_6026326099788.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/03764fb0-f45d-4e43-aa6b-7f1d6b6c4126/97743806084.pdfIn PDF document text
    • https://b6c9d0de-81a1-4db9-ab7d-8a95af9e63d6.filesusr.com/ugd/b28ae2_0fc9d89548bb40fe9002f16a59efe432.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/46119b8b-14c0-4317-9fa7-0c66573b00cb/how_to_regrow_green_onions_in_dirt.pdfIn PDF document text
    • https://56a7be67-7dca-40da-a973-69ad719fb73b.filesusr.com/ugd/fedf23_ceb02e5994454562a43762babb2eb02b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/likerajatob/desasaguxitudanifemopelop.pdfIn PDF document text
    • https://983c8978-ad56-435f-a988-47358aa6040c.filesusr.com/ugd/06a663_f8d8bc4adce3421eafe4c19660e0093b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/minabiwa/nemipenuzu.pdfIn PDF document text
    • https://fecd0c08-032d-4b8b-b26c-6108aca7a00f.filesusr.com/ugd/a87c8b_75c0fc2bb1254a7d81512dc8015901e8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/futamo/apple_time_capsule_restore_from_backup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22141a77-6026-4c53-9b73-6fc459740060/gikoxabaper.pdfIn PDF document text
    • http://niwurekatexo.atwebpages.com/microsoft_server_2012_download_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/shipping_up_to_boston_trumpet_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/timituvupame/effective_teaching_strategies_for_english_language_learners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ea73fca-8d65-46a8-81cb-6d8898d6eefa/is_a_mini_14_an_assault_weapon.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF747 4988 bytes
SHA-256: 63a53e5bd2b33f5694207e8c968410b644161ebb15d4d2adde1539d70d59360b
font_01_sfnt_off00010879.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10879 10832 bytes
SHA-256: 68df8d96d43577ca222fa327aa7ed77e7b7675c74af48b5520f01efeeecf621b
font_02_sfnt_off00012dfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DFC 16140 bytes
SHA-256: 00468df452218f546d59995a7cf9b4297092e2fd476dbd2f6ce79846bd051107
font_03_sfnt_off000142f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142F8 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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