Malicious PDF — malware analysis report

Static analysis result for SHA-256 523652877234ef8e…

MALICIOUS

PDF

73.6 KB Created: 2021-02-08 20:08:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 471379736afa159f13d16274a59732cc SHA-1: 91edf9475594050a5bc12f4016d4eb36667fdaff SHA-256: 523652877234ef8e3f0f614610b72481b73acbe00018a1eafadafa2c5280d39e
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wb?keyword=arkham%20knight%20riddler%20guide%20catwoman PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409113/normal_5fe6a36dd02ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477892/normal_5ffa5ade97bfd.pdfIn PDF document text
    • https://cdn.sqhk.co/zabeluzitema/tXMsNih/wafifigodedenutumajigajo.pdfIn PDF document text
    • https://cdn.sqhk.co/tejikeluz/ijwjbjc/6156175472.pdfIn PDF document text
    • http://lobarularexe.iblogger.org/detailed_information_about_taj_mahal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479433/normal_601ed85b33387.pdfIn PDF document text
    • https://cdn.sqhk.co/waxipefimafa/hexYggY/26784703768.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454163/normal_5ff54701beaf0.pdfIn PDF document text
    • https://cdn.sqhk.co/vadezewe/iiOshbf/23849196494.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445101/normal_600f765084d5d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402960/normal_5ffc2e429aed7.pdfIn PDF document text
    • https://cdn.sqhk.co/disonixures/jb85Bja/bose_colour_soundlink_charger.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424330/normal_601460f1a1c5d.pdfIn PDF document text
    • https://cdn.sqhk.co/lizuxutagisu/Ijfq5Jf/75905195521.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/bokelur/saxalefulon.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_off0000e469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE469 5320 bytes
SHA-256: 8547db18dd44f1a94f281b9e31cf1b5027482b99b1255ea555157b3960a5a0a9
font_01_sfnt_off0000f662.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF662 10288 bytes
SHA-256: da7721ce3afb3b4103ca70d8e9f45537901de051a143cab280488246bcc5b218