Malicious PDF — malware analysis report

Static analysis result for SHA-256 fee045a641dd7f24…

MALICIOUS

PDF

67.3 KB Created: 2021-03-25 05:22:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 0d8d77cac70f7583c1909fa34d9f11cd SHA-1: 43b6b47aed88a60866828ef3b0aad9452c4dc16d SHA-256: fee045a641dd7f2468d263eddad388bf36e1454c36de6dd5810c1f25e30c7203
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, suggesting it's designed to redirect users to malicious content. The document body, though heavily corrupted, suggests a lure related to educational worksheets, which is a common tactic for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/award?keyword=days+of+the+week+tracing+worksheet+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4387711/normal_5fc6adcc74914.pdfIn PDF document text
    • http://kawojoxakinit.22web.org/85608846086.pdfIn PDF document text
    • https://cdn.sqhk.co/kepozote/f3lyzfK/xofiba.pdfIn PDF document text
    • https://cdn.sqhk.co/lixejudazeza/Yhbgdja/wuraxugolumugemunovamaj.pdfIn PDF document text
    • https://cdn.sqhk.co/mixagumidis/ibBjhhg/robbery_and_safe_burglary_form.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421637/normal_6026d21bf15be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447273/normal_5fef71dee36a5.pdfIn PDF document text
    • https://cdn.sqhk.co/rubutemoxe/N8PhaFX/michelin_guide_chicago_twitter.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/jfhahIH/premier_league_fantasy_gameweek_32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456666/normal_6025128767a86.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/xukonakefules/anoushirvan_rohani_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/nigidezukagi.pdfIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/how_to_put_thread_in_handy_stitch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6667be1c-ee76-49eb-8be1-7eb4d76b5e64/92823159642.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca43a194-8d4f-4760-a114-562b4efd4f82/99173152682.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9faa736-d3c8-4340-998f-aee3555a9117/chrono_trigger_remake_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/55283276370.pdfIn PDF document text
    • http://wetegazepi.epizy.com/how_to_update_an_old_mobile_home.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/concertmaster_solos_sheet_music.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9CA 5644 bytes
SHA-256: 0da149fbce1ce8380b080fa00faefe15c9f79f66abf18fba6b308234bc93d49b
font_01_sfnt_off0000dd26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD26 9700 bytes
SHA-256: 47454868fa83d09125ad0d6c247de2a4780b32eb4556af29f227082a751e41b2

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