Malicious PDF — malware analysis report

Static analysis result for SHA-256 e824e1fb3a76dd52…

MALICIOUS

PDF

76.9 KB Created: 2021-02-11 01:44:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 4511f40cc6d49828552589c76ca99738 SHA-1: 6129f7c07d76d7b70235f6db9348bd652a3b21cc SHA-256: e824e1fb3a76dd52020ed0b9b25c5deb8b7b3385bc5fd2b18818420b4c6e5735
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to a suspicious domain, which is likely intended to trick the user into visiting a phishing or malware distribution site. The document body, though heavily obfuscated, contains references to a game guide, suggesting a lure to attract users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/wb?keyword=star%20ocean%20anamnesis%20global%20reroll%20guide PDF link annotation
    • http://fredo.bike/tegajg88pz.pdfIn PDF document text
    • http://it50life.pro/asking_the_right_questions_a_guide_to_critical_thinking_11th_edition_freel4yrg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445866/normal_60013d71a67fe.pdfIn PDF document text
    • http://xofenejilomoz.iblogger.org/asked_and_answered.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/mogipegi/amazon_prime_video_mirzapur_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/81941372899.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/jifowa.pdfIn PDF document text
    • http://wogurep.epizy.com/solubility_chart_worksheet.pdfIn PDF document text
    • http://falisetiven.epizy.com/free_exclusivity_agreement_template_uk.pdfIn PDF document text
    • http://timodetunidup.epizy.com/37720748193.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/free_frames_templates_for_word.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/8832664764.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/chernobyl_animal_deformities.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_off0000e1d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D8 5384 bytes
SHA-256: 38596b3f19890b9bd3b0b20e2e445665a773e34023a2eabecfdcc15aee5000bf
font_01_sfnt_off0000f3ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3ED 10620 bytes
SHA-256: 8447ef4a0332f142efad008421ad967fae6a0988267d2d6cd82f2a84b23df050
font_02_sfnt_off00011858.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11858 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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