Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b0e5fec570b86c8…

MALICIOUS

PDF

81.0 KB Created: 2021-03-28 10:25:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ccf7ab0d267d2092ad3fb19d5ef20b5 SHA-1: 737e9f84047f19366973a78b4466cb58adca6441 SHA-256: 4b0e5fec570b86c81945001e1f2bd8afeced8c459c0eb24a8cdc24cb64f3c525
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a website disguised as a bicycle speedometer manual. This URL is likely a phishing lure to trick users into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://xajibur.ru/wix?keyword=cateye+bicycle+speedometer+manual
    • http://prizinsta.site/answering_service_companies_cincinnati3x1o2.pdf
    • https://cdn-cms.f-static.net/uploads/4447276/normal_604d98e1e2829.pdf
    • http://helps-lnstagramcopyrights-about.com/wenetisap7edn.pdf
    • https://cdn.sqhk.co/tutabudoxuwa/ieAanf3/xozinogukupeg.pdf
    • https://cdn.sqhk.co/nakizenonetu/jywhaii/39006705715.pdf
    • http://idealica-official-it.website/eureka_forbes_vacuum_cleaner_service_manualmlcda.pdf
    • https://static.s123-cdn-static.com/uploads/4496378/normal_5fed500b0c9b1.pdf
    • http://ejinaya.com/how_do_i_set_up_carplay_on_uconnectivh3r.pdf
    • https://cdn-cms.f-static.net/uploads/4393506/normal_600f42ce4e271.pdf
    • https://cdn.sqhk.co/vanewano/4YicS86/screen_recorder_pro_apk_no_watermark.pdf
    • http://shop-onlain.fun/kingdom_hearts_a_fragmentary_passage_trophy_guidecph64.pdf
    • http://toportt.online/guided_reading_activities_for_year_6exlaa.pdf
    • http://persequenteamsohbet.com/health_and_safety_training_courses_near_mebq84n.pdf
    • https://cdn-cms.f-static.net/uploads/4403959/normal_602f46da0c6a8.pdf
    • https://cdn.sqhk.co/dorejewibiz/gd6hfgi/93719397667.pdf
    • https://cdn.sqhk.co/xojafimib/lcYlicm/museum_of_the_patriotic_war_of_1812_moscow.pdf
    • https://cdn-cms.f-static.net/uploads/4500679/normal_6044eb882bbc3.pdf
    • http://teatr-art.com/lights_out_2016_casthd76i.pdf
    • http://m-ryanaf.site/tesis_energias_renovablesk9vx7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5076e39a-3490-47f5-900b-e4d6529e7da6/present_tense_words_list.pdf
    • https://uploads.strikinglycdn.com/files/d342afb8-7261-4ba9-bc04-498bf9199c29/nuvoxu.pdf
    • https://uploads.strikinglycdn.com/files/ec385324-e9c8-4c4e-8ebc-604f1a3db14b/is_vicks_humidifier_harmful_to_dogs.pdf
    • https://uploads.strikinglycdn.com/files/309dea0e-a41c-473e-a93c-9e9a4fbd82b6/67781674238.pdf
    • https://uploads.strikinglycdn.com/files/5e309dba-0eb3-42db-b21b-5bdffdddde7c/94999989602.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f587.bin
837b95395a6065aedff2c4c500eb525216802e8b6db67af10833db28409c24ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF587 5364 bytes
font_01_sfnt_off000107a6.bin
fd8d44d0f69248b56899d1270d9ce28a812a24ba3ce5d3d43bcb9e7cdb03c71a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107A6 2112 bytes
font_02_sfnt_off000110d7.bin
675c85035a67621069e9e106827c607b907d165f8689292e090ebd4ba28d8a89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x110D7 10944 bytes

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