Malicious PDF — malware analysis report

Static analysis result for SHA-256 227267cb01057527…

MALICIOUS

PDF

67.3 KB Created: 2021-02-19 23:40:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f6ca5acdf2d684561280fcd4a24f593d SHA-1: 24e7a07d1295be434b389d84f008baf5f12cac02 SHA-256: 227267cb01057527016dca9d5e1e3a07dbab0362801ab6b8661d5e085a1192b5
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://crophysi.ru/wix?keyword=tanglewood+lake+wallenpaupack In PDF document text
    • https://cdn.sqhk.co/remavaveso/qifggii/subway_runner_game_apk.pdfIn PDF document text
    • http://mazanaposiwos.iblogger.org/academic_cv_latex_format.pdfIn PDF document text
    • https://xufanipup.weebly.com/uploads/1/3/1/8/131856619/pixesos.pdfIn PDF document text
    • https://cdn.sqhk.co/fajaleniwa/hcieQqJ/78957528290.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425010/normal_6027c90c80aa2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471996/normal_6024bc5e8fbee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417807/normal_5ffa781e25159.pdfIn PDF document text
    • https://cdn.sqhk.co/xopuxuvop/gdii4gj/vixofeligoxofawivebu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382621/normal_5fd62b1d4d8fc.pdfIn PDF document text
    • https://cdn.sqhk.co/siloneza/dhgjCjc/online_slots_gambling_sites.pdfIn PDF document text
    • https:///realestate.lakelivingpa.com/iwood/tangl-lakes,-75.237256ActiveIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vizebafep.epizy.com/lezasirobafuvipusexijo.pdfIn PDF document text
    • http://beruleruz.rf.gd/24693677364.pdfIn PDF document text
    • http://rafotafu.epizy.com/english_hit_album_songs_free.pdfIn PDF document text
    • http://baniginoso.epizy.com/circulatory_system_diagram_worksheet.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_off0000c97c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC97C 5072 bytes
SHA-256: 240b5793bb3c304bbe9c76e9ee3de26d4c7887a5c73b7b55e2510794b8e4aa48
font_01_sfnt_off0000daeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAEB 10908 bytes
SHA-256: 91112febdbeaf45ea97cf2163d5d280997a8267d31584f320ee49b5c56c441d8