Malicious PDF — malware analysis report

Static analysis result for SHA-256 85d1ebc47556a92a…

MALICIOUS

PDF

72.7 KB Created: 2021-02-05 05:53:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 21d3b56da952bddd6a622619d4cd459a SHA-1: ca8a5bcb2f1b1b620153195245c85f2fa32f1ffe SHA-256: 85d1ebc47556a92ac7b3dd416a57e7391ac26d767495f5fc550ce22f41f362bd
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/aws?utm_term=biblia+estudio+scofield+reina+valera+1960+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4488336/normal_600e5ab1ca645.pdfIn PDF document text
    • http://pelistens.xyz/briggs_stratton_q6500_manualthi0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477408/normal_5fd7ecbd38a16.pdfIn PDF document text
    • https://cdn.sqhk.co/buxifuludo/jadibnz/space_images_cartoon.pdfIn PDF document text
    • https://cdn.sqhk.co/jotenitix/fgjj0ia/black_men_s_fade_haircuts_pictures.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489732/normal_5fd3851b9256a.pdfIn PDF document text
    • http://oneshops.space/street_of_rage_remake_android_ppssppqy6ch.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421613/normal_600111b7932ea.pdfIn PDF document text
    • https://cdn.sqhk.co/nujudemugipi/i1gfp8C/lirenabuzimomubona.pdfIn PDF document text
    • http://lenudes.com/interpolacion_polinomica_ejerciciosxuqyu.pdfIn PDF document text
    • https://cdn.sqhk.co/polopomoset/eic5jha/pixilebisejosiguzesegeka.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411250/normal_6001ddc7f38b1.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/jivamubug/save_data_burnout_dominator_psp.pdfIn PDF document text
    • https://s3.amazonaws.com/xirixepo/antares_autotune_8_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/64914757173.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_off0000da3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA3F 5904 bytes
SHA-256: 6874fb6c6d60b6b747c40cabbf53b54db5f270da3971f69cea108d0e133a845d
font_01_sfnt_off0000ee66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE66 11616 bytes
SHA-256: 9e4cbc1b1964b36f2c24068209cada1821ae5821e98f569bb47149e7e6093958