Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d278d0bd59be5ef…

MALICIOUS

PDF

72.5 KB Created: 2021-02-13 16:20:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f4b591904aa9aa431e6d7193f393f5c1 SHA-1: 2fe45e4c3e4ada21d041e97a1cd287d726c885af SHA-256: 3d278d0bd59be5efad97ce4d0fe605fe5189c08308ba5c0d0a6916a43ac6340d
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://jacksth.ru/123?utm_term=the+great+gatsby+dialectical+journal+chapter+5 PDF link annotation
    • http://axecheat5.xyz/197895505818m9zm.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/iew3XcC/55656401984.pdfIn PDF document text
    • http://cetop.xyz/moxadaduduralivjbag.pdfIn PDF document text
    • http://najitop.22web.org/vepobijow.pdfIn PDF document text
    • https://cdn.sqhk.co/vikafaselida/Cgdjg5Y/3821059064.pdfIn PDF document text
    • http://wediwutesifetuw.iblogger.org/gikuxipopim.pdfIn PDF document text
    • http://dirtygirl.fun/android_studio_ndk_path_windowskgkfj.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/voxulija/goldy_all_song_djyoungster.pdfIn PDF document text
    • http://murarefap.epizy.com/fapugumegelibemebuxunovaw.pdfIn PDF document text
    • http://kopuperoki.epizy.com/68204959394.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/nisuwuge.pdfIn PDF document text
    • http://pewulalabes.epizy.com/wunuvideseziz.pdfIn PDF document text
    • https://s3.amazonaws.com/rolefosiju/25637450158.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/roxazavugafaluvenadis.pdfIn PDF document text
    • http://fusopub.rf.gd/heavy_birdtalker_sheet_music.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_off0000dedc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEDC 5724 bytes
SHA-256: 3fe2dd4e72cc1c8ff568645919d956b56cab113275c6c68636e670cf51960899
font_01_sfnt_off0000f25a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF25A 10148 bytes
SHA-256: c3e76754efd17909b6d361f116a4d6289dc96d04d422ed30242a8565ced03cd1