Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c37be913e06e15b…

MALICIOUS

PDF

71.3 KB Created: 2021-03-08 20:14:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 921a57962b90948cf15a33b54c46afb3 SHA-1: 2f1425252aa2d297b09af7c2d9ab46f2cd1e94dc SHA-256: 7c37be913e06e15b6a16c598b3f59ed853a677725d1528c8187f865330aa079f
126 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
  • 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.
  • 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/award?keyword=cellule+eucariote+e+procariote+pdf PDF link annotation
    • https://cdn.sqhk.co/dudavizi/cxWIxig/nizedemeb.pdfIn PDF document text
    • https://cdn.sqhk.co/vipikunowi/Ihggdif/neon_green_wallpaper_1920x1080.pdfIn PDF document text
    • http://vashe-zdorovie.xyz/research_methodology_in_architecture_thesisd7wus.pdfIn PDF document text
    • https://cdn.sqhk.co/fitamorigob/hc3Aie8/kilidisutumezikinedoral.pdfIn PDF document text
    • https://cdn.sqhk.co/sogefuluf/m4XIhfP/76783088152.pdfIn PDF document text
    • http://wubowobipevoto.mywebcommunity.org/zoperizipipak.pdfIn PDF document text
    • https://cdn.sqhk.co/sozimelizak/Xqgdsjj/pinball_maker_stern.pdfIn PDF document text
    • https://cdn.sqhk.co/gitovera/fPmBifr/2pac_changes_lyrics_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/degavorofala/gj6haYj/adventure_time_water_park_prank_dailymotion.pdfIn PDF document text
    • http://esclick.pro/wizapcuca7.pdfIn PDF document text
    • http://hookup673.site/what_is_considered_a_developmental_disability9jtil.pdfIn PDF document text
    • http://kedugobepuged.mywebcommunity.org/42098992109.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/fatisake/feziwusafavodi.pdfIn PDF document text
    • http://bejanifezilo.atwebpages.com/45507600836.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/99475591898.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/android_game_for_mobile.pdfIn PDF document text
    • http://zowofiz.myartsonline.com/arthur_miller_play_all_my_sons_summary.pdfIn PDF document text
    • http://kosezofejesuxef.atwebpages.com/50604094837.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_off0000da0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA0A 4876 bytes
SHA-256: ed61f2573d704391a386c14ea7d6307b6eab028abe0c8efdde625ef14d89e9c1
font_01_sfnt_off0000eaab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAAB 11040 bytes
SHA-256: 61c8536a834cf1b91f0641fc1a1ae364fa684ef85816ecc2ea7c6b284c3a3bfc