Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ddc7dd71930f2d3…

MALICIOUS

PDF

63.6 KB Created: 2021-02-22 01:47:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ca9a60853bbedda7bb2efaccb34b223a SHA-1: dadc969ac9c45a7607b7bbcfc529c32f1b8d92ed SHA-256: 4ddc7dd71930f2d369a884554d3b709a25c37d6d04f0f1e9c6bbeba19d5a1714
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/123?utm_term=electrical+power+engineering+basics+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4456134/normal_601a61783d0bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366309/normal_602214fac6807.pdfIn PDF document text
    • https://cdn.sqhk.co/wediximewoza/ii9jchi/space_invaders_unblocked_games_66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374013/normal_600e469744c26.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/uEibgiE/pirates_of_the_caribbean_2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487413/normal_6028e9de14597.pdfIn PDF document text
    • https://cdn.sqhk.co/muxigatatini/8UhbiY8/followers_likes_to_up_for_instagram_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/badaxiloru/20Mjihb/xawunisoxogeputaxemexelef.pdfIn PDF document text
    • https://cdn.sqhk.co/vilonunufuk/96gcijA/control_products_denver_colorado.pdfIn PDF document text
    • https://cdn.sqhk.co/vemudumuxixu/jbjdjfq/splash_canyons_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/jufenakajo/cUH4As6/music_equalizer_free_download_mobile.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378846/normal_600abfb8e1774.pdfIn PDF document text
    • https://cdn.sqhk.co/jiguluzufuwa/Jihjdhg/vebagomof.pdfIn PDF document text
    • http://meetporte.xyz/jojofuzekaxusax77rrp.pdfIn PDF document text
    • https://cdn.sqhk.co/faxiwapa/hchhjdu/44799862506.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_off0000bbad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBAD 5512 bytes
SHA-256: d219a9df5ef635535b9da2571baabbdcc89020ffcc43d07b222ccef6d3adf6c3
font_01_sfnt_off0000ce83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE83 10256 bytes
SHA-256: c1ada1a484af50d74cc03ddca3f9526f8618902bf6e175ed271434b696b11caf