Malicious PDF — malware analysis report

Static analysis result for SHA-256 d381856231db263e…

MALICIOUS

PDF

77.4 KB Created: 2021-05-04 02:28:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 215db78e04a0976e2db268165abab6e7 SHA-1: 9eee33e08d43585a0337f7d65aacd90227b2ecda SHA-256: d381856231db263e73682bc36004ae22e6d55934d12a387fe2fad482b5cd31f0
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 0.9996

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://midufefew.ru/strik?utm_term=death+note+netflix+anime+download PDF link annotation
    • http://ruxenawuxovogu.getenjoyment.net/smoothie_recipe_book.pdfIn PDF document text
    • https://cdn.sqhk.co/baxoladipezu/2icgcrb/driving_school_2017_all_cars_unlocked_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/pugipepa/cgdjaxw/panibiri.pdfIn PDF document text
    • http://lukufogud.getenjoyment.net/vernier_caliper_mitutoyo.pdfIn PDF document text
    • http://vumejopiraxu.mywebcommunity.org/lasonedatidoduguru.pdfIn PDF document text
    • http://riwuvodobopexu.mywebcommunity.org/beribaze.pdfIn PDF document text
    • https://cdn.sqhk.co/zufuxirap/e5jahfA/tewaxu.pdfIn PDF document text
    • http://pexawegowe.mywebcommunity.org/47238977537.pdfIn PDF document text
    • http://dawezedelofeda.scienceontheweb.net/figafojapox.pdfIn PDF document text
    • http://ronifibofizet.medianewsonline.com/dovewatamidolufi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4db8d79a-eb1d-407a-a116-a468e6fc1c05/68389393010.pdfIn PDF document text
    • http://buwifojozoziden.atwebpages.com/moxetoniwosojevivezulo.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/a_night_out_form_2_moral_values.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e9038f6-2637-432f-a3e7-d9708b51f67e/64309448909.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/6297464840.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/auto_call_recorder_2017_pro_apk.pdfIn PDF document text
    • http://fuvarijes.atwebpages.com/cards_against_humanity_online_gameplay.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/95468570495.pdfIn PDF document text
    • http://jezevenakos.myartsonline.com/ielts_reading_passages_for_general_training_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b35e0bf-e7e9-4c86-a85b-e8800cf1db6d/what_does_cxl_mean_on_a_buick_lacrosse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d68f9ce1-f783-4988-8692-a2f0aa724697/79288856849.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_off0000ef80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF80 5032 bytes
SHA-256: 722bc2712ceb00bf6ac70a4833fe748022ec655e12f7fe68643805b335a1334e
font_01_sfnt_off0001009b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1009B 11096 bytes
SHA-256: b09133b2e81cb5a24695211a0862b1c570efbc17135ec753ff391e5d05bb71de

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