Malicious PDF — malware analysis report

Static analysis result for SHA-256 74393b8f351779b6…

MALICIOUS

PDF

175.3 KB Created: 2021-03-17 22:26:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 9c90e812077d2eab2f6b0fb35d16579b SHA-1: 242fe55ae47d8e067d53230d4806119890d7f9ce SHA-256: 74393b8f351779b6c761cdbe8e5df65e03265b07d8b97cd6c1c3443f00190ba6
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. The document body, though heavily obfuscated, suggests a lure related to a "Pathfinder summoning guide", likely to trick users into clicking the malicious link.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=pathfinder+summoning+guide In PDF document text
    • http://jidapuxedepu.medianewsonline.com/anatomy_and_physiology_of_digestive_system.pdfIn PDF document text
    • https://kawuzuke.weebly.com/uploads/1/3/1/6/131606938/lenop.pdfIn PDF document text
    • http://juzezudusota.mypressonline.com/hp_scanner_not_working_with_catalina.pdfIn PDF document text
    • http://sovuradema.medianewsonline.com/avadhanulu_and_kshirsagar_engineering_physics.pdfIn PDF document text
    • https://vilejote.weebly.com/uploads/1/3/4/6/134629871/5659267.pdfIn PDF document text
    • http://rajajime.mypressonline.com/apa_format_reference_example.pdfIn PDF document text
    • https://zoseduzarososu.weebly.com/uploads/1/3/2/7/132740870/ed3052.pdfIn PDF document text
    • http://kalidejomepajo.scienceontheweb.net/chemical_reaction_engineering_book_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bitines.myartsonline.com/kimuras.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/bandook_ke_photo.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/improper_fraction_worksheets_for_grade_3.pdfIn PDF document text
    • http://samesesodore.onlinewebshop.net/89536261145.pdfIn PDF document text
    • https://s3.amazonaws.com/bejexe/apaharan_web_series_mx_player.pdfIn PDF document text
    • https://s3.amazonaws.com/tevomenil/42_yard_machine_parts_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/bizamesuwepe/nba_courtside_reporter_salary.pdfIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/35630381165.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/bi_penniform_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/3679027769.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_off0002745e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2745E 5292 bytes
SHA-256: 99ed95f1f82e837e421e7effd7a178357e7515ea41fee8ac972ce31d4adc3d66
font_01_sfnt_off00028632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28632 12132 bytes
SHA-256: 37d46f8da83de54823754a2ccfe37347543da3e6294dfa0745f54c92fcc7b6d6

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