Malicious PDF — malware analysis report

Static analysis result for SHA-256 5433b2ddea7a3ca0…

MALICIOUS

PDF

76.8 KB Created: 2021-03-14 17:32:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 376af25dcfd66b3fb2b0757fd46555a9 SHA-1: 75936dda830803cf6783d69b96768df3f76f7f03 SHA-256: 5433b2ddea7a3ca0bb9fdfa10b9e62c331eaf0f152a3d3a5954e1bc097f97287
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains embedded URLs, with one prominent URL suggesting a phishing or scam lure related to 'catechism class baptism quiz answers'. The presence of embedded URLs and the overall detection by security tools strongly suggest this document is designed to redirect users to malicious sites, likely for credential harvesting or malware distribution.

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://dafemum.ru/wix?keyword=catechism+class+baptism+quiz+answers
    • https://pawusavexamase.weebly.com/uploads/1/3/0/8/130813618/jodokenukel_zugitetexekiga_fukidatakiwu.pdf
    • http://fullhp.info/stopping_by_woods_on_a_snowy_evening_themex9ss7.pdf
    • https://galuxenezinex.weebly.com/uploads/1/3/4/4/134437763/8e0342f8c2d.pdf
    • http://tesezemav.iblogger.org/lunuve.pdf
    • https://wubigunes.weebly.com/uploads/1/3/4/5/134507070/716730.pdf
    • https://bupekotarox.weebly.com/uploads/1/3/0/7/130739944/2111932.pdf
    • http://uspex22.online/9492825113584uz1.pdf
    • http://pixell.store/what_does_it_mean_that_faith_is_the_evidence_of_things_not_seen1bonf.pdf
    • http://ecosbor.net/tikitiwikalakikirkcpnz.pdf
    • http://copyright-securityx.com/honeywell_vista_20p_installer_codem5tpc.pdf
    • http://desidegabata.22web.org/bootstrap_4_admin_template_angular.pdf
    • http://legendnat.space/kobuvaribafofelujivuzauwxcm.pdf
    • http://trening-ekaterinodar.ru/how_to_turn_graco_nautilus_car_seat_into_booster1zgal.pdf
    • http://meblik.su/xetabimirezanifozagisicgu4f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/paxuvagal/36409844820.pdf
    • https://s3.amazonaws.com/bulozor/54825349398.pdf
    • https://s3.amazonaws.com/tinivukedeta/feng_shui_rooster_placement_2021.pdf
    • https://s3.amazonaws.com/lowebemuwojiso/togunik.pdf
    • http://mekuroxowu.epizy.com/dasapulugaxovotos.pdf
    • http://busikuf.rf.gd/honduras_safety_report.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_off0000f070.bin
5bd42a2105e05c8e81340448dd80919548411bfea79578a08018eebc11ea3069
pdf-font-stream PDF embedded font (sfnt) at offset 0xF070 5484 bytes
font_01_sfnt_off00010302.bin
1c068532ec152a1f0d521aa17dd93205cee98801fb4dc82478f2a1bc4a7d9a50
pdf-font-stream PDF embedded font (sfnt) at offset 0x10302 10124 bytes