Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1f82047ae216088…

MALICIOUS

PDF

68.2 KB Created: 2021-02-20 22:47:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 22ec7029ce330b5cfc6cb6e7688a17ee SHA-1: b1ae9aa831e51fb3aa2517edb6b1c838c1bc376d SHA-256: e1f82047ae216088aa039709144489a87dc33ceb5363b9943707ca9c86b3f9c7
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wix?keyword=answer+key+template+multiple+choice PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369516/normal_6009edd4cc46d.pdfIn PDF document text
    • https://cdn.sqhk.co/zapiseniw/gghbf2e/12948107295.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465938/normal_600cfaefc011c.pdfIn PDF document text
    • https://cdn.sqhk.co/wiradimabid/gdRidJ6/9453747736.pdfIn PDF document text
    • https://cdn.sqhk.co/guwuweri/0hc5n7d/36419877874.pdfIn PDF document text
    • https://cdn.sqhk.co/verexoleki/ygegchi/netflix_christmas_movies_2020_release.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414502/normal_5feb73730162c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371023/normal_5fe8050624fee.pdfIn PDF document text
    • https://cdn.sqhk.co/pavoraxebute/iirq0if/nuwojo.pdfIn PDF document text
    • https://cdn.sqhk.co/tememagitapo/EFgdSha/52885589385.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476420/normal_6025372a640b2.pdfIn PDF document text
    • https://cdn.sqhk.co/supesuvepo/lokjiig/wogirejadupuravijot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465390/normal_602ed38263fb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481156/normal_60268a3eae259.pdfIn PDF document text
    • https://cdn.sqhk.co/zerurukoraju/ogjhgjd/jodijeg.pdfIn PDF document text
    • https://cdn.sqhk.co/suzironanes/XehiRPX/vinibupufidipewajilipejo.pdfIn PDF document text
    • https://cdn.sqhk.co/jovowosifo/haAhaBv/36851192644.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492871/normal_600017097abec.pdfIn PDF document text
    • https://cdn.sqhk.co/xisalaximel/jjNifhg/27725987514.pdfIn PDF document text
    • https://cdn.sqhk.co/revinoxu/ibUjWIC/80319306698.pdfIn PDF document text
    • https://cdn.sqhk.co/sunomedude/dPjjWje/extinction_rebellion_logo_designer.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_off0000ccdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCDC 5420 bytes
SHA-256: cbb58424a3f76e2f85ff0b319d7b888441365a042252257e35069d3c92b4e784
font_01_sfnt_off0000df36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF36 10840 bytes
SHA-256: b8a9f3aa1c9644792df43f6ec46d01d77315ffb0e82623575e90527680b58002

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