Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c3f2a7ace2cf1ed…

MALICIOUS

PDF

72.0 KB Created: 2021-02-28 19:17:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3949abe345f88e871db1dc5d7ce6d6cd SHA-1: d68bc63720b6a31fc2dc01a1b768e04351611461 SHA-256: 9c3f2a7ace2cf1ed5a1e50968adce737bb4f2599fb1545bee314d3a421811e76
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://baarspo.ru/award?keyword=islamic+names+meaning+in+urdu+book+free+download+pdf PDF link annotation
    • http://kerutugizuxig.mygamesonline.org/43189533979.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389793/normal_5fff43d2032e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414672/normal_60214635aed02.pdfIn PDF document text
    • https://verosogoteri.weebly.com/uploads/1/3/4/7/134738646/ff22a3bda9da2.pdfIn PDF document text
    • http://maykistore.ru/63866937435wnr1p.pdfIn PDF document text
    • http://vittorguxx.site/99572908773fwx6k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411935/normal_5fcdc43dc09df.pdfIn PDF document text
    • https://dataremidesop.weebly.com/uploads/1/3/4/6/134697992/runis-zoruwe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408197/normal_5fe4682362e2d.pdfIn PDF document text
    • http://profer-opt.ru/mitizuzodaseyxm77.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/bersa_combat_plus_review.pdfIn PDF document text
    • http://lazujifoxupa.getenjoyment.net/how_to_clean_ratchet_straps_by_dirt_farmer_jay.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/Rbjozjg/balenciaga_bag_strap.pdfIn PDF document text
    • https://cdn.sqhk.co/rijujonakuje/gfhcZgc/mabupimevabaz.pdfIn PDF document text
    • http://converstarget.ru/semowawa2wh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387235/normal_5fcc99c0afd83.pdfIn PDF document text
    • http://uspehdnyaaxyz.xyz/gekibepigirifedaxsupge.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459621/normal_6028a3061bb87.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000db77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB77 5708 bytes
SHA-256: 1dc510aea09c30dd389074caf474f3969cf3f0751de0925eb264d31d90d2e0ee
font_01_sfnt_off0000eede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDE 10420 bytes
SHA-256: 30b17bd8decc3c1a7b63bf712713f7087c25847d2db04c04c36565885f106562

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