Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dab81f2144dc25c…

MALICIOUS

PDF

79.0 KB Created: 2020-12-24 02:00:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 78cf0883baea64e916f35bc253d8ac0d SHA-1: d29febf79b8f191ef981b49b811a53e601541e2d SHA-256: 3dab81f2144dc25c54f41e877b107a4c410ca2bda9c2d22d38191d4a176b82c1
116 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'Name creator for free fire apkpure' and embeds a URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, suggests a social engineering pretext to drive users to the external URL.

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
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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://trafffe.ru/strik?utm_term=name+creator+for+free+fire+apkpure PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4404108/normal_5f93ad19bafac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401691/normal_5f9fb817748e8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/basel_i_ii_iii_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/minecraft_future_client_hack.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/jodiniwuje.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/zemotenibij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00179c75-302a-4c25-9668-21e0c68c68ae/76326506144.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1168466a-28c6-418c-8b3d-2e6edd84fcaf/aadhar_card_password_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/best_latino_iptv_providers_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/xegobirogejuzasirowo.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/unblocked_game_sites_uno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/194ee8f8-b949-400b-b3ac-dbdbca96a14d/remetuj.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/oracle_sql_join_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/2005_cadillac_cts_v_manual.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ceec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEEC 3488 bytes
SHA-256: 1b622453583d40f18f56f96afb073549269155efad2aa9cd5733a6abd6597039
font_01_sfnt_off0000dae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE2 4984 bytes
SHA-256: aab7d73c865271b201597d05afb7d1a873c322eae1116aa48b64cc6bce5a31e5
font_02_sfnt_off0000ebc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC4 7640 bytes
SHA-256: 8fbc4ed268706fcb7c27a8057cd8688b7931b752a5e9163c7acc785d543090a3
font_03_sfnt_off00010718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10718 10936 bytes
SHA-256: 20fbc0c68b875a6595e966fb58d62b31a819f7525d406e0d99c3169ca58e4a49

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