Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad6053aee09a5425…

MALICIOUS

PDF

74.9 KB Created: 2021-01-31 21:37:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4e7a4f5247a0fb302775fbdf158bba3d SHA-1: 4bcce3f29511d1be447620355fe326fed59fd87b SHA-256: ad6053aee09a5425006f7e931eb04068af65480be0ed4f19bf92315e1891e6f9
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://bologen.ru/aws?utm_term=call+blocker+for+android+2.+3+free PDF link annotation
    • https://cdn.sqhk.co/kopozufu/RehjZL5/evolutionary_approach_psychology_quizlet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404727/normal_5fe630e98f65d.pdfIn PDF document text
    • https://cdn.sqhk.co/xamapetarel/TdLDAhf/89273948447.pdfIn PDF document text
    • https://cdn.sqhk.co/xanovixewin/kNhaXhc/download_the_king_of_fighters_98_the_slugfest.pdfIn PDF document text
    • https://cdn.sqhk.co/sinewuvemomi/93jjgf6/duxenewuzaboroni.pdfIn PDF document text
    • https://cdn.sqhk.co/latosagax/gpdjcAa/fobedazosezulifovesija.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416299/normal_5fc712842557f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457620/normal_5feaec13f2e6e.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxosutuku/hhqhbwh/wojigefududumenujegak.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/memexelu/xafidirak.pdfIn PDF document text
    • https://s3.amazonaws.com/lepefi/business_administration_management.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/93049909718.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/pisasu.pdfIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/15838233630.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/kafapenagegab.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/dekofugesenozesoxu.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/blinkist_premium_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/gexafux.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_off0000e848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE848 5276 bytes
SHA-256: 02029a8541ea444f1c6ae25209d28b9f12f255c032913ae7e86a54d29eaa3c41
font_01_sfnt_off0000fa49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA49 10696 bytes
SHA-256: d38aa878b0fe37b33ad62566460be554cd19dbe1ff85a938cdf7bf8a5c20dd5b

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