Malicious PDF — malware analysis report

Static analysis result for SHA-256 7426668e504727db…

MALICIOUS

PDF

98.5 KB Created: 2021-05-10 06:52:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: cd3c48e6848365f62f2f0ecbf5b4a6ac SHA-1: 7b43edc0df1c9d60be5a2981bb116fe7db3bf290 SHA-256: 7426668e504727db0ec45ae21e93c869dca34d4ed389ebd841941b8cf0135645
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that leads to a domain associated with malicious activity, likely to deliver a second-stage payload or redirect the user to a phishing site. The document body, though partially corrupted, suggests a lure related to educational content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/strik?utm_term=newton%2527s+laws+of+motion+practice+worksheet+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4495387/normal_6056d5cf58c03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471106/normal_606e5d4eceece.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374366/normal_60019b52cb6bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388421/normal_604a27247ace3.pdfIn PDF document text
    • http://latencfsrt.space/36883967934v8bgx.pdfIn PDF document text
    • http://workmonster.net/kazevolobux8k92p.pdfIn PDF document text
    • http://m-laskin.ru/all_saints_primary_school_peterborough_uniform1ylcn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387715/normal_603cbc49e3913.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489411/normal_60666c9b33684.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/how_do_i_reset_my_ge_stackable_washer.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/let_it_go_frozen_violin_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/tugafebip/gopro_hero_3_wireless_password_reset.pdfIn PDF document text
    • http://fonimegalidoxu.epizy.com/37723417517.pdfIn PDF document text
    • https://s3.amazonaws.com/bizamesuwepe/blazor_webassembly_template.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/wuwot.pdfIn PDF document text
    • http://jonemif.epizy.com/ejercicios_verbo_etre_y_avoir_primaria.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/79083671552.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/41296836500.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13613 5204 bytes
SHA-256: dcab97fe455c48418394595da274139f6e5aa9e8f73abacbc0abbc54c5e52429
font_01_sfnt_off000147af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147AF 11036 bytes
SHA-256: ac581435ac3d8b2f7e2e74d177d6e57f42334947d97aaf2242d41afc40e5bfe7
font_02_sfnt_off00016dbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16DBF 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

Open this report in the interactive analyzer, or submit your own file for analysis.