Malicious PDF — malware analysis report

Static analysis result for SHA-256 91af63d1fd701ace…

MALICIOUS

PDF

71.0 KB Created: 2021-04-16 09:15:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b565e873eddd11f727249d7f75ce9888 SHA-1: 5d0cf9f3c5eb22bf479b12b80ad8574cea6f799f SHA-256: 91af63d1fd701ace3d0c9780f38650ec50584162f1e6f2c70f0df12d736ee487
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://botokaw.ru/strik?utm_term=hp+6700+printer+scanner+failure PDF link annotation
    • https://cdn.sqhk.co/wixikinotu/gZgfib2/my_little_princess_castle_1._13_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/titabofasika/MDXgjgi/family_farm_life_insurance_company.pdfIn PDF document text
    • https://cdn.sqhk.co/rumoligodo/hgXOhb6/megiselawaweluxe.pdfIn PDF document text
    • https://cdn.sqhk.co/tezikegoj/gtIjhgi/best_free_online_piano_lessons_uk.pdfIn PDF document text
    • http://bagururidafu.22web.org/graphing_quadratic_function_worksheet_answer_key.pdfIn PDF document text
    • https://cdn.sqhk.co/luveruzosu/3WAjhp0/satizurojiparedi.pdfIn PDF document text
    • https://cdn.sqhk.co/jekefebiba/idicjhD/bimuril.pdfIn PDF document text
    • https://cdn.sqhk.co/javomekoru/zToiahd/zebra_crossing_abbey_road.pdfIn PDF document text
    • https://cdn.sqhk.co/sofilita/1zjejic/history_of_islam_religion_in_bangla.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ferozar.rf.gd/causes_of_anemia_in_pregnancy.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/animal_body_parts_printable_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/11358143840.pdfIn PDF document text
    • http://dakofuvijazeti.rf.gd/daneverevezelapurukobosib.pdfIn PDF document text
    • http://lopumupukerodu.epizy.com/how_to_buy_a_home_in_canada_with_no_down_payment.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/simmba_aankh_marey_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/tuzonitexoxisuzig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/961de410-129f-4b28-9ffc-35d822c4b7ef/is_thunderbolt_3_compatible_with_firewire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8149d244-69a6-4c30-bec5-03c0faa8e03a/sony_mdr-zx770bn_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a1b2210-1843-4129-97e9-1c8ad8b3315f/2453580257.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/pisewogazuwaxu.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/how_to_put_a_million_dollar_baby_crib_together.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/1775584215.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/ruvanete.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/linksys_wrt120n_manual_french.pdfIn PDF document text
    • http://lutatiduz.epizy.com/lanejarufiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8be36911-2e4f-4c63-9589-2f5644c7fcb1/xumapupofuluzamefefub.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_off0000d911.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD911 5348 bytes
SHA-256: 2efa2cde45e5a93ac12d7da641d7a9cf3c787d6707c0b2682a43bfd93b43aed0
font_01_sfnt_off0000eb56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB56 10148 bytes
SHA-256: db8c46874e9428de7705382f4fec26f8c03ed05de596bb963f11312f171bc5c7

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