Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c12ebe99584f2a3…

MALICIOUS

PDF

76.2 KB Created: 2021-02-26 07:18:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: f41d5c0b11cf9edb71df849730e349d3 SHA-1: 6b62d21479165b9b797a977b11a8b8dcdecf25e5 SHA-256: 2c12ebe99584f2a3e08a703543022af48aeb51e25f6e0ce32d5e098369372146
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The embedded URL 'https://maypoin.ru/123?utm_term=engineering+drawing+book+by+n.d+bhatt+pdf' suggests a phishing or social engineering lure, aiming to trick users into believing they are accessing legitimate content. The document body, though heavily obfuscated, contains references to wkhtmltopdf and a date, indicating it was likely generated programmatically to host 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
  • 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://maypoin.ru/123?utm_term=engineering+drawing+book+by+n.d+bhatt+pdf PDF link annotation
    • http://wabuxon.iblogger.org/mikebuxa.pdfIn PDF document text
    • http://sodiwemewobigi.22web.org/16405333702.pdfIn PDF document text
    • http://xivoxuvawet.iblogger.org/able_invitations_templates.pdfIn PDF document text
    • https://cdn.sqhk.co/bufudoraxala/AjeVhbq/amazon_gold_rings.pdfIn PDF document text
    • https://cdn.sqhk.co/xovikojux/gfWgiCY/vuzapijadij.pdfIn PDF document text
    • https://cdn.sqhk.co/bomoxale/CRAhahj/zawijunif.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/vofadoloves/business_strategy_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/tecnologia_da_informao_aplicada_a_logistica.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/html_templates_free_for_school_websites.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/project_plan_template_in_excel_2013.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/18098034693.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/petrografi_batuan_sedimen.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/wodutibukowelufarefif.pdfIn PDF document text
    • http://dizojid.rf.gd/buzezifagojosim.pdfIn PDF document text
    • http://roluvad.epizy.com/greeting_card_maker.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/36817264312.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/flower_hand_embroidery_designs_free.pdfIn PDF document text
    • http://refaruzevogot.epizy.com/pitu_app_chinese_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/affichage_formule_excel_2016.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_off0000eb23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB23 5480 bytes
SHA-256: 312ffda347e84a6a1e1c2166cd3765775b0dd3926df0898f8ec26643aca050cc
font_01_sfnt_off0000fde7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE7 11056 bytes
SHA-256: 06483b06bd9bb95e725e58a94d390ceee20bf8cd8442e954e44fab190c04955e

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