Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6165c9246773299…

MALICIOUS

PDF

71.4 KB Created: 2021-03-03 00:50:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e017513829233a6c7ed06b31bb1c50dc SHA-1: ee49a55bcdd9587339c9a78dd72a816b96af7fc6 SHA-256: a6165c92467732996a1e831f15f05b4b329ec554105b106aa2973152d3f7cc15
224 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Invisible PDF links to CAPTCHA-themed web lure high PDF_CAPTCHA_LINK_LURE
    PDF contains invisible clickable link annotations that point to a CAPTCHA/capcha-themed web path. This is a common phishing and ClickFix-style routing pattern: the PDF itself is inert, while the linked page performs the credential prompt or fake verification.
  • 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.
  • 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://yafferge.ru/award?keyword=subnautica+time+capsule+locations+map In PDF document text
    • https://cdn.sqhk.co/nujudemugipi/Iie417c/2captcha_bot_para_android.pdfIn PDF document text
    • http://zidujuwus.iblogger.org/street_fighter_4_apk_obb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370077/normal_5fe17f0f9c5d3.pdfIn PDF document text
    • http://memimusisat.getenjoyment.net/cards_against_humanity_questions_generator.pdfIn PDF document text
    • http://markettop.pro/kawuvosesuvinigosasapua32d4.pdfIn PDF document text
    • http://sexedate69.site/219845233318lmiw.pdfIn PDF document text
    • http://koreanluxe.com/charcoal_portrait_drawing_step_by_stepzzxos.pdfIn PDF document text
    • https://cdn.sqhk.co/zuwiwejagub/E2evjgd/2_pics_1_word_mix_pics_puzzles.pdfIn PDF document text
    • https://cdn.sqhk.co/fujalapevame/jig4Lay/sales_steam_history.pdfIn PDF document text
    • http://vowufijetapiko.sportsontheweb.net/what_does_far_sighted_mean.pdfIn PDF document text
    • http://flathead.us/up_election_voter_list_20172do7d.pdfIn PDF document text
    • http://nakalabaxis.mywebcommunity.org/21209901375.pdfIn PDF document text
    • http://begetus11ppz.xyz/227442922940hflo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388820/normal_600106eec8ca9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mujelagikajuju.rf.gd/bmat_2016_section_3_answers.pdfIn PDF document text
    • http://tixofimisupabev.onlinewebshop.net/sony_bravia_32_inch_smart_tv_price_in_ksa.pdfIn PDF document text
    • http://pabovabavuwemet.rf.gd/mk11_all_fatalities_guide.pdfIn PDF document text
    • http://gevegure.rf.gd/bakery_logo_template.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_off0000dbf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF2 5224 bytes
SHA-256: 3d74e6e810a61d38b4f4ed64380fd2a27962d2d635f2955d195b7cfbc10134e4
font_01_sfnt_off0000eda4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA4 10120 bytes
SHA-256: 76a48f3fdc6a1b792929eb565a4f616ea5e0193ca7509643efdc50144ca8a64f