Malicious PDF — malware analysis report

Static analysis result for SHA-256 d31eafed82ae478b…

MALICIOUS

PDF

66.5 KB Created: 2021-02-23 02:54:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 0f4239f90730823e07ec1b6dc9a496d9 SHA-1: 5a75ace6d5427269c186bb9839b40ce3820304ca SHA-256: d31eafed82ae478b65a85c1ef4b685e9dff636197c11e8de4550c167b67b5057
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/wix?keyword=arctic+king+5000+btu+installation PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4472221/normal_6033da80310ac.pdfIn PDF document text
    • http://luferuvijudadof.22web.org/italian-_english_visual_bilingual_dictionary_free.pdfIn PDF document text
    • https://cdn.sqhk.co/muwizavo/1jfr4Yg/97953591071.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367013/normal_60106cd3c0c43.pdfIn PDF document text
    • https://cdn.sqhk.co/zururodi/ThjWWhb/bus_rush_download_free_game_online.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376357/normal_5ff90af37c15a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489058/normal_5fe3a902f17ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376629/normal_5fce8ed706f3c.pdfIn PDF document text
    • https://cdn.sqhk.co/ludozenidi/gfYGTOd/beautiful_wallpapers_for_laptop_full_screen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413117/normal_60298c9af25f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374839/normal_602af5b43ef27.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481402/normal_6003416513799.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418170/normal_6014ab35219d6.pdfIn PDF document text
    • https://cdn.sqhk.co/gawagunikuw/8i1amFh/datowuzafop.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378831/normal_5fc6134619090.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sitozi/non_profit_bylaws_template.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bcc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCC0 5192 bytes
SHA-256: 3c34b30e96c9ac1f55a708cb86ec5fef7ac6e973b91e1f304f424233c2ed2e7a
font_01_sfnt_off0000ce70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE70 9512 bytes
SHA-256: b39f6f709ddd1f6f6eeb066922f01a2b4243fa04617be343f989a7af484bf8ce
font_02_sfnt_off0000eecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEECB 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361