Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc3cf900e39faac4…

MALICIOUS

PDF

99.6 KB Created: 2021-02-12 13:01:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: d8acd7811c0ae156e3d1b372497c6bc4 SHA-1: 3763b7557413a7ee1d25093b6da7f1b2ca50c55a SHA-256: cc3cf900e39faac45615f9f34757d623017f3e132830d065437e5e79a00d9f0f
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, likely intended to phish for credentials or lead to further malware. The document body, though heavily obfuscated, contains text related to 'Stanton college preparatory school tuition', suggesting a lure. The presence of multiple embedded URLs and a high ML classifier score indicate malicious intent.

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://baarspo.ru/123?utm_term=stanton+college+preparatory+school+tuition PDF link annotation
    • http://evatopshop.xyz/cheats_blood_omen_2_pcdo8cs.pdfIn PDF document text
    • https://cdn.sqhk.co/zukasedu/jbkiiaU/jurudigu.pdfIn PDF document text
    • http://generalmassage.online/anouilh_medeapwwtb.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/Dhcgfge/equalizer_2000_gun.pdfIn PDF document text
    • http://domastmsk.space/58758216233490ez.pdfIn PDF document text
    • https://cdn.sqhk.co/goganededem/yShby9h/neon_green_jump_rope.pdfIn PDF document text
    • http://4d-5d.com/canon_eos_t5_user_manualilcg0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lagamifex.epizy.com/kolutunedejebelova.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/android_box_apps_reddit.pdfIn PDF document text
    • http://kikevanalujik.rf.gd/school_uniforms_pros_and_cons_research_paper.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/hazardous_materials_sign_template.pdfIn PDF document text
    • http://tetexamafikej.epizy.com/68003378353.pdfIn PDF document text
    • http://rixexoto.rf.gd/fewizimud.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/senna_guide_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/48055540393.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/3298032139.pdfIn PDF document text
    • http://zigazus.rf.gd/mubamufuxibosu.pdfIn PDF document text
    • http://jofarizo.epizy.com/project_kickoff_meeting_ppt_template.pdfIn PDF document text
    • http://pojetol.epizy.com/free_powerpoint_templates_business_processes.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14873 5400 bytes
SHA-256: c133e8e28bbc86ab18136a27bb61549e344bd2aef9e8a7979125f172eb77a4c9
font_01_sfnt_off00015ad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15AD0 11176 bytes
SHA-256: b799d18e038c888da059ae072920b6cf6cd40251495a04f852a79b2467550e50

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