Malicious PDF — malware analysis report

Static analysis result for SHA-256 807a47af91ebb191…

MALICIOUS

PDF

69.3 KB Created: 2021-03-26 08:56:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86ed4bd3be6c34ea414be6543c147459 SHA-1: 624fa691af22988b878cca9f64e0fcfeb22d4e1f SHA-256: 807a47af91ebb1916d9784f5a4dd8223edf83028db3650afcc24bcba9b0f3ddd
136 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the document is designed to trick users into downloading a password-protected archive, a common tactic for evading security scans. The embedded URL points to a suspicious domain, likely serving as a distribution point for the malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://baarspo.ru/strik?utm_term=echo+pb+755+blower+price
    • http://qupieasy.online/totemujaxly3il.pdf
    • https://cdn.sqhk.co/vunalogivefu/iUm4Ijc/pitbull_hd_wallpaper_singer.pdf
    • http://taher-tcac.com/99529273301go41d.pdf
    • https://cdn.sqhk.co/tajixixejafi/hgI2jgq/peacemaker_long_range_challenge.pdf
    • http://fuvidevifa.scienceontheweb.net/21482278933.pdf
    • http://gakagebir.mypressonline.com/sunitawi.pdf
    • http://fabikaj.iblogger.org/draven_guide_tft.pdf
    • http://banolapisa.iblogger.org/acc_aha_htn_guidelines_2017.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sidepojedava.myartsonline.com/50245805783.pdf
    • https://uploads.strikinglycdn.com/files/8b045b50-b62d-4740-ad1a-50fe40f9f20e/how_to_stretch_properly_after_a_workout.pdf
    • https://uploads.strikinglycdn.com/files/86f1c650-72a3-44c2-ac0e-c5d5561fdcf2/rar_file_password_cracker_mac.pdf
    • http://texukevopafol.epizy.com/alejandro_magno_libros.pdf
    • http://vofiwevo.epizy.com/xmanager_free_for_linux.pdf
    • https://uploads.strikinglycdn.com/files/e494ff7f-8038-4daa-bba0-14180c67ef4a/is_adt_pulse_going_away.pdf
    • https://uploads.strikinglycdn.com/files/911c2de2-633c-4818-bf0f-2735ad04f4c3/dimupakeleji.pdf
    • https://168d2a81-f750-40c6-a653-3787650f980d.filesusr.com/ugd/3bcfef_ff6413bb83b44a4aaf719c1ca10baec2.pdf?index=true
    • https://uploads.strikinglycdn.com/files/355479ef-bf12-4e68-bc62-2468591be8ac/24360668245.pdf
    • http://nafaradevofipaf.myartsonline.com/99194772941.pdf
    • http://mesonunero.rf.gd/xuwabepuluzepave.pdf
    • https://4a1fbaa0-0e67-401b-a466-96699e2e5642.filesusr.com/ugd/9647bf_9cba11c819544424a421eec279c02463.pdf?index=true
    • https://85d2c5a2-fc31-4f76-86b4-4ebe2abe2bf4.filesusr.com/ugd/a8cc01_b2294b4b034f46968aece7458a36593f.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_off0000d161.bin
b1e58c3c53bfadb27218d5342e8572ac7e3f0cc1907bd479dff3a8b4959fe20b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD161 5024 bytes
font_01_sfnt_off0000e29c.bin
f27ac77bdc9c7a47ab5b49604b7d256b9816ce487944710ace23511008585496		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE29C 10376 bytes

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