Malicious PDF — malware analysis report

Static analysis result for SHA-256 c25f9658342299b3…

MALICIOUS

PDF

71.5 KB Created: 2021-01-27 09:20:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 93d06d6f73371dacc63f6e4cca1b3ab1 SHA-1: 4a08aeb57d8e34467db8eda16206f42d08253ec8 SHA-256: c25f9658342299b3271e3b39ba21c924409f9c1a40698dfaee87a9aa82a5a98a
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffmen.ru/wb?keyword=tanks%20battlefield%205 In PDF document text
    • http://zinifezabi.iblogger.org/platform_film_hd_full_video.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444370/normal_5fe1ca201a49f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503309/normal_5fc5da95e0153.pdfIn PDF document text
    • https://cdn.sqhk.co/rabuvimi/jcdmIzX/59938644494.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421333/normal_600db2867c7e1.pdfIn PDF document text
    • http://raifaisentgo.online/android_radio_app_head_unitsg9n4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476146/normal_6000c94998464.pdfIn PDF document text
    • http://soldonlakewood.com/96188818000bjncq.pdfIn PDF document text
    • http://fibakigefejep.66ghz.com/counter_strike_global_offensive_apk_android.pdfIn PDF document text
    • https://cdn.sqhk.co/mudaxomemut/5gdJxhr/panabipatewoveguwa.pdfIn PDF document text
    • https://cdn.sqhk.co/gigatakel/jihqiib/music_download_free_sites_mp3_players.pdfIn PDF document text
    • http://copyrighytsupport.com/dependent_prepositions_worksheetcosvl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zawuzujuw.epizy.com/vigimififabaweti.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/zedotimanuxobapiwifuwokom.pdfIn PDF document text
    • http://nefigubisi.epizy.com/77922526407.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/swarm_intelligence_principles_advances_and_applications.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/78231903088.pdfIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/mario_kart_world_tour_guide.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_off0000db6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6A 5084 bytes
SHA-256: 6951851094a05755868ba700b1e6ef977dc3b6dd6633c17d679f92b1aba6fb67
font_01_sfnt_off0000ecd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD0 10656 bytes
SHA-256: df6b88e6cbb242d7f2f2c9be14ecfb7962b3f4205fb13f6d8902a8b46b4dca61

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