Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3d86b8bf9cb080d…

MALICIOUS

PDF

81.3 KB Created: 2021-02-06 21:32:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: d873e5fb5531e2adfd5e31a60c0a6d8a SHA-1: af5f10ceb1ff069f54510cbb835c75c9f6147688 SHA-256: b3d86b8bf9cb080dba98162c44da9ae453e2f03144edb62d9d20de2dbd8021ab
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://druttle.ru/aws?utm_term=anker+powercore+10000+redux+manual PDF link annotation
    • http://nasporte1.fun/71403561809p6hel.pdfIn PDF document text
    • http://4gusevshop.website/mchat_twitch_appbsp6x.pdfIn PDF document text
    • http://walletelectrum.buzz/10623879511flwuq.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/ILOhggh/boom_beach_hack_download_for_android_free.pdfIn PDF document text
    • http://susurrus.space/press_kit_folder_templatet1f49.pdfIn PDF document text
    • http://3gusevshop.space/60984390352i2usc.pdfIn PDF document text
    • http://basvuruizleme.online/90110585305x7l7.pdfIn PDF document text
    • http://rentline.pro/muzi_v_nadeji_2011_downloadpb3c0.pdfIn PDF document text
    • http://logvoz.ru/background_check_consent_formjr7xm.pdfIn PDF document text
    • http://ca-manalapan.space/curso_de_ingles_nivel_intermediowp1yw.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/nimuwet/all_pokemon_games_cheats.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/48493604853.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/opera_browser_with_vpn_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/angry_birds_movie_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/boating_safety_tips.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_off0001024f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1024F 5448 bytes
SHA-256: c9320147aa5bbd4528059ac515e9b1d1787bdbe54f278fdcf794b23281deb925
font_01_sfnt_off000114e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114E0 10468 bytes
SHA-256: fdffc903e4d7fb895d2d71c2d05bf871e0305de26643c46971298e935aea4ffe