Malicious PDF — malware analysis report

Static analysis result for SHA-256 77d7c40ce68ce959…

MALICIOUS

PDF

67.0 KB Created: 2021-03-28 14:29:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5001708423a0b8e4e5755ae6adbf569e SHA-1: 5966794755b3937afd04308d532ef7f283c7735c SHA-256: 77d7c40ce68ce959c13fbe80699c73e3bb5e98770d1b50f63e4b5a82e8c481e0
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified as a phishing or malware distribution lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs suggests the document is designed to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wix?keyword=worksheet+2+altitude+to+the+hypotenuse
    • https://cdn.sqhk.co/matikefateri/1IuI1gi/3d_blue_hedge_craft_runes.pdf
    • https://cdn.sqhk.co/duxadikoti/galW2gj/61794407226.pdf
    • https://cdn.sqhk.co/fekurisakez/d1Njdjc/simple_music_player_windows_7.pdf
    • http://probkin34.xyz/asme_b31._8_download1i9tn.pdf
    • http://zaxevef.getenjoyment.net/66892136855.pdf
    • https://cdn.sqhk.co/jigijobofofa/qaxEicK/ani_nurhayani_sakura_school_simulator_2020.pdf
    • http://technodom11.com/how_to_convert_jpg_file_into_in_mobile75yze.pdf
    • https://cdn.sqhk.co/livukigelo/hjhdjgT/lavir.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/58ff1f86-59b4-4145-bdec-ef459a69825d/30378431843.pdf
    • https://uploads.strikinglycdn.com/files/42458aac-b745-4856-9b17-d25c840959b1/vojurisupanajulik.pdf
    • http://japinoxizidunub.myartsonline.com/butonener.pdf
    • http://popofisofol.myartsonline.com/amore_e_psiche_testo.pdf
    • https://uploads.strikinglycdn.com/files/3a0e0638-b71f-4a24-a0d5-05f2be6d3874/967484772.pdf
    • https://uploads.strikinglycdn.com/files/73e78c2d-2630-4ea2-bb3a-0a3daab92e14/hatchet_gary_paulsen_book_report.pdf
    • https://uploads.strikinglycdn.com/files/48d3f952-6cb5-42bd-89bd-98c03447ff39/9375906367.pdf
    • https://uploads.strikinglycdn.com/files/269a5e10-cf7b-400b-8401-a9834355f982/if_the_savior_stood_beside_me_piano_solo_sheet_music.pdf
    • https://uploads.strikinglycdn.com/files/494e2938-e727-4d54-bad8-e36155ef483f/xobafalitobidarifox.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_off0000ca77.bin
ec8c95adb86edd636816d80967e80e87ee527ba797d74e2e883bf149175382f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xCA77 5360 bytes
font_01_sfnt_off0000dcc1.bin
138bf0f2cb751880ed4549d2ed577b611907ea4f56febac0822b2379727c1d93
pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC1 10064 bytes