Malicious PDF — malware analysis report

Static analysis result for SHA-256 8667b6288b9f8275…

MALICIOUS

PDF

64.4 KB Created: 2021-02-17 16:01:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3f5de4eaa7642eae7866ff58d8b66390 SHA-1: af5ddd485b55603529cad66835668f193bc5e6e4 SHA-256: 8667b6288b9f82755edc0db0f4f0cbd38dea24e1f0161d77a962a1f4f2ebbb8d
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://baarspo.ru/wix?keyword=madison+county+high+school+baseball+schedule PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4461216/normal_5fed0ede63c16.pdfIn PDF document text
    • http://infonewstravel.com/gun_notification_sounds_free_downloaddle6r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380869/normal_5fd0f087e6679.pdfIn PDF document text
    • http://poradoit1.site/8964795464780jzu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461497/normal_5febc1d2c2ecb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482406/normal_600f1d1026fa7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423155/normal_5ffe108fb40b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450883/normal_601f9f516aa27.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448121/normal_6006db9505e37.pdfIn PDF document text
    • https://cdn.sqhk.co/segexiji/hdhfxjd/33814658023.pdfIn PDF document text
    • http://dotuzodozo.22web.org/am_i_joke_to_you_meme_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416930/normal_6024247863ae2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389106/normal_5fce2e0d71a17.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/xapijifas/beautiful_couple_photos.pdfIn PDF document text
    • http://balesalefune.epizy.com/biwavave.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/best_free_android_mobile_games_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/gititamasawenimuwe.pdfIn PDF document text
    • http://segukilu.epizy.com/47797034172.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/7_wonders_of_the_world_2018_information.pdfIn PDF document text
    • http://leximadibiwojid.epizy.com/64618363591.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_off0000bf4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF4E 5352 bytes
SHA-256: f8693572509f14a3c93ca280d7efd70501a89254c142a6d1b8b7c4091e76377a
font_01_sfnt_off0000d198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD198 10152 bytes
SHA-256: ebd2b3bb02605538adb8c656dc1740de8df1ea381c07bc071bef06c5c8d0ab85

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