Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f217cea493cbfb4…

MALICIOUS

PDF

73.2 KB Created: 2021-02-15 14:56:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c6eb7013cac00271a95b44db1ce8cf15 SHA-1: b3be96184021addf792381aa86fd4ac930a5eb5f SHA-256: 9f217cea493cbfb40cde27778f0486a56db9f64fb7ab79ed2e549aeeead8caa7
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/wix?keyword=pokemon+alpha+sapphire+apk PDF link annotation
    • http://espaceabone.com/23007580609knm7l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377400/normal_600a7a12ee8bb.pdfIn PDF document text
    • https://fozaronu.weebly.com/uploads/1/3/5/3/135349809/4446974.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453134/normal_600b5d2e405dd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393028/normal_5ff263b8d0613.pdfIn PDF document text
    • https://labekefetimobu.weebly.com/uploads/1/3/0/7/130739294/lejutoburuxuv_novuzezaj_juwobalaxigi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379487/normal_600dae7048865.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415309/normal_5fc79b809a06b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380211/normal_6010936884e08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366340/normal_5fd91fd1ab6c5.pdfIn PDF document text
    • https://lemorixumo.weebly.com/uploads/1/3/4/7/134748879/2555619.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/nisoxow/bastendorff_beach_surf_report.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/chaahat_ki_khushboo_ko_hd_video.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/74290348032.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/88613886741.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/57737008750.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/how_to_do_calculations_in_excel_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/dusined/52860610788.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_off0000e217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE217 5124 bytes
SHA-256: e1a867408a09282830ea87c729121958ddcf4ea196696430fc5b40f4b5622fe5
font_01_sfnt_off0000f357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF357 10660 bytes
SHA-256: 79aea5bfe34cc05b02328b4ba5a8967868a19bf88fc8eba025147b55822b2968