Malicious PDF — malware analysis report

Static analysis result for SHA-256 b056c1de721feda6…

MALICIOUS

PDF

78.8 KB Created: 2021-03-29 02:45:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: f0640eb745a73c6ae5f7c56cd9d5b468 SHA-1: 75b860d26fbfaf687d6f1fcae261ac4216f51061 SHA-256: b056c1de721feda6266442858786be62f51ee51a7020dc2dd9f80edcb55709e9
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ClamAV detection and ML classifier strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick the user into visiting a malicious site, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://xajibur.ru/award?keyword=retinal+anatomy+and+physiology+pdf PDF link annotation
    • https://cdn.sqhk.co/ximepadogi/1ageFid/mazebert_td_pc.pdfIn PDF document text
    • http://wrinklestiltskin.com/letter_format_for_ledger_accountqp5my.pdfIn PDF document text
    • http://ninuxalezopo.getenjoyment.net/neurological_physiotherapy_evaluation_form.pdfIn PDF document text
    • http://rankingcoach-seo.com/galaxy_s9_plus_screen_replacement_cost_in_dubaig993m.pdfIn PDF document text
    • https://cdn.sqhk.co/devuzemalut/heQgxqx/farm_offline_games_village_happy_farming_mod_apk.pdfIn PDF document text
    • http://instapriz.site/what_food_did_the_pawnee_tribe_eat2e34k.pdfIn PDF document text
    • http://cashtanks.fun/155152498137dpx5.pdfIn PDF document text
    • http://naturwow.space/android_payment_gateway_integration_exampletjh4n.pdfIn PDF document text
    • http://fizarumokugafu.mywebcommunity.org/23638025626.pdfIn PDF document text
    • http://movivuvafozor.iblogger.org/what_is_amazon_interview_questions.pdfIn PDF document text
    • http://sixesijilolun.mywebcommunity.org/42894044591.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/sorogamat/bleach_mobile_3d_game_apk.pdfIn PDF document text
    • http://mivurukelino.onlinewebshop.net/tv_stand_design_catalogue.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/score_sheet_volleyball_doc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a4b99b7-95b5-474c-a79a-0bb94df18276/zopowojofudebes.pdfIn PDF document text
    • https://s3.amazonaws.com/wolawatin/career_development_plan_format.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/50566476456.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbc012fc-c9f6-4818-9816-eb5dd3e88d75/73389388052.pdfIn PDF document text
    • http://fimageparoxa.rf.gd/71235558229.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f12924b-348e-457b-9036-e41ca7de5d7b/43127838790.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb5728f8-997a-432c-b278-e94cd2162305/87695141828.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/bible_quiz_genesis_chapter_13.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b5a9ae4-cf74-49de-b879-a44f29efb991/yamaha_tsr-6750_manual.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_off0000f622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF622 5468 bytes
SHA-256: 46306450114936565307d0af23784a76632cfd594ba4ebfc3bad062ec0c72fc8
font_01_sfnt_off000108ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108AC 10812 bytes
SHA-256: 3f1704898cf9953365ba0946de051e0c05348212ef9d79ecc1757c7971a5941d

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