Malicious PDF — malware analysis report

Static analysis result for SHA-256 f949bd3f31944cb8…

MALICIOUS

PDF

82.9 KB Created: 2021-03-10 00:34:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7554b9b2a5a7222159bd79d14bab95fe SHA-1: ff7bbb5968451b064169b365c12ce2948514dbc9 SHA-256: f949bd3f31944cb801cf6ebd19a9740db50a5cc9dfd25e5a6d4e920583ef499c
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.
  • 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://gimoguvi.ru/123?utm_term=adele+rolling+in+the+deep+video PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421472/normal_5fdbd6f0c7d62.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481539/normal_5ffc535f59e40.pdfIn PDF document text
    • http://goodnaturak.space/vosapubejedexadekaxaxjsrj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471099/normal_6038568c80c00.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383321/normal_5fffb175a6566.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393034/normal_60133bb5c7ab2.pdfIn PDF document text
    • https://cdn.sqhk.co/furugilenu/thj6gId/xolumodisujonotagon.pdfIn PDF document text
    • https://cdn.sqhk.co/kokojisip/hgcXfhe/super_simple_nursery_songs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449616/normal_5fd3cc9baaaa6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459477/normal_5ff8c44e13dcb.pdfIn PDF document text
    • http://thrivewebs.com/25004354516b4zez.pdfIn PDF document text
    • http://svarka-aurora.online/94542302477k9bl4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495558/normal_600aac31a7f75.pdfIn PDF document text
    • https://cdn.sqhk.co/kenoramof/wjcgj2D/finesimupilebe.pdfIn PDF document text
    • http://vipimuxatomefi.medianewsonline.com/kipoxaxu.pdfIn PDF document text
    • http://legendarycraft.ru/carx_drift_racing_2_pc_modsap79z.pdfIn PDF document text
    • http://trynutra.shop/66040746286sqi6n.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://seroritubofa.atwebpages.com/free_books_to_read_during_pregnancy.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_off0001060e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1060E 4880 bytes
SHA-256: 2d7f6b4afa457ff0bee1b831016586a049ed641e237c2a31def96ac07d57c3be
font_01_sfnt_off000116a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116A5 12828 bytes
SHA-256: db8aaa386c137a13c7909b796e246fb3b898f0bc689d92b74d57198fdd6c93f9