Malicious PDF — malware analysis report

Static analysis result for SHA-256 101437cd24b2e1e7…

MALICIOUS

PDF

74.1 KB Created: 2021-03-01 08:33:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 64af4b14788db3562f14a72ece80b30a SHA-1: 40830b0db7943050ca052633cc1aa708a3b39cd4 SHA-256: 101437cd24b2e1e707a6daea2841557ca8e4f430d94fd4829f0053fc2547da77
166 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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://fokemale.ru/aws?utm_term=how+do+i+factory+reset+my+centurylink+modem PDF link annotation
    • https://cdn.sqhk.co/vujagefamig/ibhjnbM/tasty_words_2_level_3.pdfIn PDF document text
    • http://copyrighytsupport.com/bose_dead_or_alive_moviejdkq8.pdfIn PDF document text
    • http://kismyketio.com/10746101594v07sh.pdfIn PDF document text
    • https://cdn.sqhk.co/zupitefa/cifGdja/airtel_recharge_postpaid_internet.pdfIn PDF document text
    • http://ubsvp.com/agilmente_bajartt44s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496372/normal_6036a2423f267.pdfIn PDF document text
    • http://itanto.space/kulozurabenabomoraxudhmw7.pdfIn PDF document text
    • http://barbanapoli.moscow/android_one_vs_android_9_piepj1il.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495271/normal_5fdf2bee1d4a9.pdfIn PDF document text
    • https://cdn.sqhk.co/navimoxa/jjicp3n/65618375101.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427085/normal_602e4f91ad826.pdfIn PDF document text
    • https://cdn.sqhk.co/nigudovowa/ibliaeS/my_digicel_top_up_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372087/normal_6032befa41e9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393209/normal_601057c2ce29d.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/dinisemowoge/79081233590.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_off0000e58b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE58B 5384 bytes
SHA-256: e06e92bb675959204eb98f3239b2445d9cc9f10efefe9b06a7250e78b949dde7
font_01_sfnt_off0000f7df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7DF 10304 bytes
SHA-256: 31f49cf12ccfe99f6d3ecd8e1c77bdf174e7e1ec0090e44293ca1368f69476ba