Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee868baa7e844a6…

MALICIOUS

PDF

76.3 KB Created: 2021-02-27 11:24:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 6a972f943a86aeaa2da623e6bbf98106 SHA-1: 76665838e903bfcb690219bf72dcf1143553b568 SHA-256: 2ee868baa7e844a69f2a6ef7c67d056bba925d732b3250c34487f747dd1e909a
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://vilenefex.ru/123?utm_term=oscar+et+la+dame+rose+chapter+4+summary PDF link annotation
    • http://copyrighthelpcentral.com/polininevenisegevif1aq34.pdfIn PDF document text
    • http://wewogokuwidu.mywebcommunity.org/what_did_scarlett_ohara_say_at_the_end_of_the_movie.pdfIn PDF document text
    • http://mazafaka69pussy.online/puxukorinegowfmmsx.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.website/niteveore2.pdfIn PDF document text
    • http://mon-cmbretagne.com/baldurs_gate_3_reddit_reviewnaz0p.pdfIn PDF document text
    • http://swiss-gear.shop/flint_group_gmbh_annual_reportx80xh.pdfIn PDF document text
    • https://mewurotimopu.weebly.com/uploads/1/3/1/3/131381658/lusexada_burumepimu_womegilisotufos_mirumew.pdfIn PDF document text
    • https://dejurepezuneron.weebly.com/uploads/1/3/1/4/131452785/dfddb8c4c.pdfIn PDF document text
    • http://xitawefavam.medianewsonline.com/63342548457.pdfIn PDF document text
    • http://jabilevij.mypressonline.com/kenmore_model_158_sewing_machine_manual_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384152/normal_5ff4290140163.pdfIn PDF document text
    • http://lnstagram-blue-ticks.com/first_alert_carbon_monoxide_alarm_beeping_5_times2kuih.pdfIn PDF document text
    • http://ruguwafe.scienceontheweb.net/what_are_the_5_elements_of_game_design.pdfIn PDF document text
    • http://wonder-ita.fun/19018336521dp9g0.pdfIn PDF document text
    • https://bazopozetera.weebly.com/uploads/1/3/1/6/131637116/6882102.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450507/normal_602b8fef71d58.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412592/normal_5fe3c8051239d.pdfIn PDF document text
    • https://cdn.sqhk.co/labifikup/jigyhgc/mobile_weather_radar_tomorrow_orlando.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475987/normal_602c296dbec7c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405652/normal_5ff33cf9e1754.pdfIn PDF document text
    • http://1green.space/832813984249v3xo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ea76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA76 5528 bytes
SHA-256: c42e06b9bd95526f12f5d78264c13b382d929c29fdac8b8b2509861c30ac5f02
font_01_sfnt_off0000fd20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD20 11872 bytes
SHA-256: 45e3fb3007d6ad7895f66745a328031fcb9f6f9f553aac475b5d411d71cb9907

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