Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f0acea3333683f9…

MALICIOUS

PDF

76.9 KB Created: 2021-01-30 13:47:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 564e9103e67d6f82b2cd2779047ae6d3 SHA-1: 97e8fbb9591f9232225506dd5b7b2cf353a7a7f1 SHA-256: 4f0acea3333683f957c155aec2dca7cd81a37bd405dbdb526324ff15a38340ed
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wb?keyword=cash%20app%20money%20missing PDF link annotation
    • https://cdn.sqhk.co/dovoxukeni/ahgKKTF/kpop_music_chart_melon.pdfIn PDF document text
    • https://cdn.sqhk.co/letojeka/iOihQXx/story_maker_instagram_story_editor_collage_creator.pdfIn PDF document text
    • https://cdn.sqhk.co/pijajawopoji/Fhd3pwQ/pujikipumab.pdfIn PDF document text
    • https://cdn.sqhk.co/vawapisoxe/wtGdIia/42455408248.pdfIn PDF document text
    • https://rijagadufe.weebly.com/uploads/1/3/1/6/131606992/8257686.pdfIn PDF document text
    • https://cdn.sqhk.co/feketukadoz/KrjigjR/runes.pdfIn PDF document text
    • https://rinixupikexem.weebly.com/uploads/1/3/4/0/134096042/2212517.pdfIn PDF document text
    • https://cdn.sqhk.co/napotani/ggehbHP/45739288635.pdfIn PDF document text
    • http://mazoxobiziwikut.iblogger.org/41224051341.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4527164/normal_5fc8ae6a3aecf.pdfIn PDF document text
    • https://vipizavubo.weebly.com/uploads/1/3/1/4/131407691/vofurezagobilominenu.pdfIn PDF document text
    • https://getaforufuzok.weebly.com/uploads/1/3/4/7/134733873/7335d0d64e705.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://banumekopi.epizy.com/avis_get_your_guide_new_york.pdfIn PDF document text
    • http://mugosovexu.epizy.com/71252168144.pdfIn PDF document text
    • http://vuvuvemalazot.epizy.com/google_chrome_free_older_version.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_off0000f111.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF111 5112 bytes
SHA-256: 29b383ff8c28a8ee266bfc97bb0d7453c454320b74133b5b508f6dde219a9398
font_01_sfnt_off0001025e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1025E 10740 bytes
SHA-256: 113b5d4d94e40b9a5b809fc378f2468b84396b70b0812d147aa9f6a7fd111bed

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