Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e307b5c025a3b48…

MALICIOUS

PDF

76.5 KB Created: 2021-02-13 04:05:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c984cad8036b3c43e2554a69aa68c2d0 SHA-1: a243663b72f7f2008a997daf911ea51a8299bbc8 SHA-256: 5e307b5c025a3b480dd0d87a666097dfcf03ae3bd54916f5fee2acae9e5cc93e
154 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://jacksth.ru/123?utm_term=mutual+dell+campground+weather PDF link annotation
    • http://rusherx.studio/52492384939t41i.pdfIn PDF document text
    • https://cdn.sqhk.co/vazodowadu/hhjaieq/max_payne_mobile_android_aptoide.pdfIn PDF document text
    • https://cdn.sqhk.co/zikonidenijo/0KgdAAq/finger_slayer_wild_mod_apk.pdfIn PDF document text
    • http://indonesia2health.online/watch_friends_season_8_episode_6_onlineamsy2.pdfIn PDF document text
    • http://xobokalute.iblogger.org/how_do_we_define_uniformly_accelerated_motion.pdfIn PDF document text
    • http://my-favshopf.online/eclipse_phase_2nd_edition4f3t3.pdfIn PDF document text
    • https://cdn.sqhk.co/kurotevu/fPjiajU/bilekileremojuro.pdfIn PDF document text
    • https://cdn.sqhk.co/felatadag/h0MYHCa/kofosakagetok.pdfIn PDF document text
    • https://cdn.sqhk.co/miwataxanis/jg1g5ib/20_games_in_1997.pdfIn PDF document text
    • https://cdn.sqhk.co/lupobikud/agdhfie/4538913050.pdfIn PDF document text
    • https://cdn.sqhk.co/galemojubemo/j5hagiE/diriwivajilozuxabum.pdfIn PDF document text
    • http://nafaguxidu.iblogger.org/bible_study_questions_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/dofexoxev/che90jd/ates_ve_su_3_buz_tap_nag_indir.pdfIn PDF document text
    • http://usacreditmonitoring.info/vunobozisuji02uua.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vawojemi.epizy.com/rapujawolowolawitaxen.pdfIn PDF document text
    • http://kitojob.epizy.com/75178277564.pdfIn PDF document text
    • http://xoponupesede.epizy.com/58307403590.pdfIn PDF document text
    • http://begalokatixatu.epizy.com/citing_web_pages_in_apa_format.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_off0000eca6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA6 5408 bytes
SHA-256: aff997e8c462f3f02b5b5d4275119ef60cac46c73a920da40a482c7361ae4752
font_01_sfnt_off0000fefc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEFC 11268 bytes
SHA-256: fe5a5bfac9a9f010eeb7e48ce72b6a6553d265d5b98d6a5a35997a4d0a792c00