Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab1193aa0eefd4d1…

MALICIOUS

PDF

85.1 KB Created: 2021-02-21 02:39:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6cf9fe531d10cafd329b9db02b8063b7 SHA-1: 81f208d27f02fe88f32b998bda161b6ffa967015 SHA-256: ab1193aa0eefd4d1357e0ecd8f7cded64f42514e95e79cef163a63de1b06a9e5
184 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
  • 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://yafferge.ru/123?utm_term=graco+sequel+65+rear+facing+height+limit In PDF document text
    • http://adanakebap.org/42609173714dhk0v.pdfIn PDF document text
    • http://price-list.moscow/pokemon_alpha_sapphire_free_download_rom71knk.pdfIn PDF document text
    • http://pogadai.xyz/54014547181ou0zj.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/182ihOC/77494991410.pdfIn PDF document text
    • https://cdn.sqhk.co/luwokiseg/kighc6Y/50803234274.pdfIn PDF document text
    • https://cdn.sqhk.co/fipuwemupe/jgibShg/schema_electrique_lumiere_avec_interrupteur.pdfIn PDF document text
    • https://cdn.sqhk.co/sewadokoka/Pkjejc1/wogomutakapuvumopat.pdfIn PDF document text
    • https://cdn.sqhk.co/jezuleku/oiiibs5/39334702815.pdfIn PDF document text
    • http://womuwure.22web.org/7912948389.pdfIn PDF document text
    • http://kemotunitajifap.iblogger.org/fingerprint_authentication_android_app.pdfIn PDF document text
    • http://7lessons.website/airplane_games_for_windows_76lwpt.pdfIn PDF document text
    • http://suboxobuwofum.iblogger.org/can_i_renew_my_id_at_a_dmv_kiosk.pdfIn PDF document text
    • https://cdn.sqhk.co/jiluputumusi/cib9fia/stickman_archery_addicting_games.pdfIn PDF document text
    • https://cdn.sqhk.co/rekutadis/ghugdhc/prisma_photo_editor_per_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/jomawutid/hhfHYif/emergency_alert_settings_iphone_canada.pdfIn PDF document text
    • https://cdn.sqhk.co/kufedefivuvu/hg6ksja/99578861641.pdfIn PDF document text
    • https://cdn.sqhk.co/gobenebovi/hN1pjgX/gupudofilemaro.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://notufexunu.rf.gd/54231244024.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_off00010d77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D77 5732 bytes
SHA-256: e57465c63af30045fdfefb972aa99870e1500f6c538f841f3222eda146eefc17
font_01_sfnt_off000120cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120CF 11376 bytes
SHA-256: f755dc7c68e3b6d27c97d8f88fdf093be45a07269fe261cf1b3706125508a351