Malicious PDF — malware analysis report

Static analysis result for SHA-256 a73b2ed61b14974b…

MALICIOUS

PDF

72.8 KB Created: 2021-02-12 13:32:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 75ff81b74c6ff16a2d60e59f92325e5b SHA-1: f4c452f606048164737e565c20dd08e84fe209c4 SHA-256: a73b2ed61b14974bf8fa8a1aeab522b8a0c6367154017e605f2bc52599326548
136 Risk Score

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://seumenha.ru/aws?utm_term=angularjs+form+builder+example PDF link annotation
    • http://gallery-shop.site/87400820608um1kz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495409/normal_6008e2fd3c5fe.pdfIn PDF document text
    • http://agentsoft.space/drifting_cars_gamesey0pv.pdfIn PDF document text
    • https://cdn.sqhk.co/bitomasijelo/61K3bEp/turbo_drifters_unblocked.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383565/normal_5fd266f3a365c.pdfIn PDF document text
    • https://cdn.sqhk.co/kewixoretuze/ij6ieig/joplin_craigslist_personals.pdfIn PDF document text
    • http://bas-vorota.ru/call_of_duty_beta_pc629rs.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/dobikasukavu/basic_alarm_clock_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/peltier_effect.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/gangster_bengali_movie_480p.pdfIn PDF document text
    • http://rivobuzuxi.epizy.com/asthma_diagnosis_and_treatment_guidelines.pdfIn PDF document text
    • http://nimobavaze.epizy.com/amapiano_mix_august_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/character_creation_free_android_games.pdfIn PDF document text
    • http://bosurigazo.epizy.com/rexovuvozakigenogabeg.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/templates_ecommerce_html5_gratis.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_off0000d8cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8CF 5636 bytes
SHA-256: 625fb522fc68425645804bb52a3fc0e2980407bca2fa71f543dde50f44215a0b
font_01_sfnt_off0000ebf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF1 12404 bytes
SHA-256: 8798fdd1774bfef2bbaf9ee61bc8f353186fe2cec84137bb2a49aeace557b71a