Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b9a39e4ea50b356…

MALICIOUS

PDF

73.9 KB Created: 2021-03-03 04:52:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ee40a8cd513c8fbaf3ba4e622cf20f34 SHA-1: 9e0316799d03d82fc79b2d0238f3e38943c40112 SHA-256: 3b9a39e4ea50b35618dbb5e695eff031dc5206f0c741ffedaf56bc0f3d35fd18
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://soxebez.ru/wix?keyword=how+to+make+a+crossbow+more+powerful+minecraft PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4418972/normal_5fd64ad5e9044.pdfIn PDF document text
    • http://prodit.space/47559332269meq1s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369775/normal_601be37dd1339.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382190/normal_603e8717d7cd9.pdfIn PDF document text
    • http://betmoy56.com/vokewusawudeteo5.pdfIn PDF document text
    • https://nuresoxak.weebly.com/uploads/1/3/1/3/131380504/vinug_juzelomuwid_pamadukezunepab.pdfIn PDF document text
    • http://nejupike.mygamesonline.org/kexomabanopofupofov.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451744/normal_5ff9038c871b2.pdfIn PDF document text
    • http://worelimupuvefam.mywebcommunity.org/31850691106.pdfIn PDF document text
    • http://evatopshop.xyz/17045514034r05cf.pdfIn PDF document text
    • http://dkblogin-de.best/sebuledumagosawimanunovudxbgd.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/sewamos/hello_neighbor_hide_and_seek_android.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/how_to_install_cantilever_deck_forms.pdfIn PDF document text
    • http://tejogasev.rf.gd/top_video_maker_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/popilo/delonghi_magnifica_s_descale_light_flashing.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_off0000e475.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE475 5416 bytes
SHA-256: 69c83611cc2b0153e928f5b1389009e28dffd803db3ba591ea3e44c5e45fca59
font_01_sfnt_off0000f6d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D5 10428 bytes
SHA-256: 468ff4a0f8faad2b71185ca983908d4714f18e2c4115e94c2a78cf23b1d0933b