Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac5f9484d9688957…

MALICIOUS

PDF

65.1 KB Created: 2021-02-05 02:50:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c2831a5f6d6655534e98caf8c1e66309 SHA-1: 22412b8a5f9d3a28165fccf31994d6a266a11167 SHA-256: ac5f9484d9688957315ff7440cd5ab6919034e49b8d620f28a8001b6dc072968
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://crophysi.ru/123?utm_term=happily+ever+after+kiera+cass+pdf+weebly In PDF document text
    • https://cdn.sqhk.co/feketukadoz/f9oiKid/alienware_m15_r3_review.pdfIn PDF document text
    • http://tewazezila.66ghz.com/song_change_chahe_made_halat_wich.pdfIn PDF document text
    • http://doxisolawasusig.66ghz.com/chaos_group_license_server_information.pdfIn PDF document text
    • https://cdn.sqhk.co/fukonovum/GMiggcR/asgard_s_wrath_steam.pdfIn PDF document text
    • https://cdn.sqhk.co/ludozenidi/ybjhggf/draw_a_stickman_epic_2_nintendo_switch_review.pdfIn PDF document text
    • https://cdn.sqhk.co/vakanaju/icaljim/56779883944.pdfIn PDF document text
    • http://shoop-ff.ru/maruti_swift_vdi_shocker_pricembvue.pdfIn PDF document text
    • https://cdn.sqhk.co/manowipete/jAgdoih/47340953225.pdfIn PDF document text
    • http://gabutetidik.22web.org/39315306546.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zukixewagiv.epizy.com/80707962251.pdfIn PDF document text
    • http://wuparol.epizy.com/quotation_template_for_electrical_work.pdfIn PDF document text
    • http://totofexux.epizy.com/protection_paladin_leveling_guide_classic.pdfIn PDF document text
    • http://wuzapulemukepux.epizy.com/drown_bmth_piano_sheet_music.pdfIn PDF document text
    • http://woxariwete.rf.gd/zitujisisona.pdfIn PDF document text
    • http://rifavewo.epizy.com/switch_pro_controller_android_pairing.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_off0000bf0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF0E 5568 bytes
SHA-256: 7b849464c8b82621676a83c335ae19a871a153f52fe7b31f4176af010c2fa839
font_01_sfnt_off0000d223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD223 11040 bytes
SHA-256: 4cc87b85c6fd2a229b56812ecf036777728eb5cee987c7a71b944b7df2d8fe72