Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dd7b6893b9789ad…

MALICIOUS

PDF

70.4 KB Created: 2021-02-24 11:50:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fe6223a7c188db611c2a1d685f034d3f SHA-1: 0ba8a39e22ecb057d4e9f75ab8e04a26bd1a4b0e SHA-256: 4dd7b6893b9789adaee7e8995d314d9d9bb3c34e612960168c192318ffc63744
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jacksth.ru/wix?keyword=smash+dude+hack+apk PDF link annotation
    • http://kinoxca.xyz/rezuradafuzizuwu5xmg1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407780/normal_602eb62d26d75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485313/normal_600bb7fae704f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447487/normal_6020508109bc0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455659/normal_6026c1a052dd9.pdfIn PDF document text
    • https://cdn.sqhk.co/fonizijodi/GvifOF6/35870792094.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464878/normal_5fcc8fdf931e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380072/normal_6031c26e2a391.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365542/normal_5fcbaee67cb40.pdfIn PDF document text
    • http://dress-russia.ru/car_racing_club_namesgmc0b.pdfIn PDF document text
    • https://cdn.sqhk.co/pugipepa/4i9Ohic/titan_quest_atlantis_worth_it.pdfIn PDF document text
    • http://salet.store/machine_learning_beginner_tutoriallpc50.pdfIn PDF document text
    • http://lifeshop.pro/15684889102srllz.pdfIn PDF document text
    • http://bilkaita.space/71003890181n68yx.pdfIn PDF document text
    • https://cdn.sqhk.co/zezoxomop/icibLKn/84420025989.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410020/normal_602923520786d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374359/normal_5ff90bd38e6ff.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/wizuluworafid/losse_bestanden_samenvoegen_tot_1_bestand.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_off0000d3ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3FF 5352 bytes
SHA-256: 6cd59a7ef4cd33c18feba7711e5dff5dc68f48a85b912996d63d996cd9777a61
font_01_sfnt_off0000e610.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE610 10920 bytes
SHA-256: 0a6e64159b9684ae0cafffa44f3acf1361450eb56341e370635294f126c0d71f