Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0f38efd8db46092…

MALICIOUS

PDF

73.1 KB Created: 2021-02-21 02:38:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 05aee906b070296e4480752987bb2334 SHA-1: ff7ac7f274a38296f5eeef6f63acb513b5f18fdf SHA-256: f0f38efd8db4609264791c7b1d6b635942210ad1eab00558354892f8d2ad9b6a
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/aws?utm_term=toyota+corolla+2009+ce+specs In PDF document text
    • https://cdn.sqhk.co/kukisigafumi/gfIicIw/chili_s_gift_card_balance_online.pdfIn PDF document text
    • https://cdn.sqhk.co/soxemudu/cDiiijf/36825942176.pdfIn PDF document text
    • https://cdn.sqhk.co/kewawukufiju/jggciii/picosecond_femtosecond_laser.pdfIn PDF document text
    • https://cdn.sqhk.co/ranemagesoga/GicGDgf/bronze_age_used_in_a_sentence.pdfIn PDF document text
    • https://cdn.sqhk.co/gudijupimeb/4jbjebb/electric_guitar_tuner_online_free.pdfIn PDF document text
    • https://cdn.sqhk.co/vonirosidejo/e7E4ihe/fibimepabunaviworipiza.pdfIn PDF document text
    • https://cdn.sqhk.co/novitovikor/taheZOp/rec_screen_recorder_hd_download_for_windows_10.pdfIn PDF document text
    • https://cdn.sqhk.co/posukomokufi/cgdhe6x/just_dance_controller_app_switch_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/tonukabonuwe/ijV7zgi/47810465419.pdfIn PDF document text
    • https://cdn.sqhk.co/wazafanez/ieihidc/renaxesapogulobofibow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bexituxupogetav.rf.gd/kenupazunis.pdfIn PDF document text
    • http://losisotudek.epizy.com/interface_and_abstract_class_in_java.pdfIn PDF document text
    • http://bemerolafun.epizy.com/jhin_mid_guide_s8.pdfIn PDF document text
    • http://lorovaxejavagu.rf.gd/87156134908.pdfIn PDF document text
    • http://birabigipo.epizy.com/play_store_application_pending.pdfIn PDF document text
    • http://puriwevusireda.rf.gd/blotter_report_pnp.pdfIn PDF document text
    • http://vitafunajubala.rf.gd/mabaposinuk.pdfIn PDF document text
    • http://lidekajemunow.epizy.com/7322468280.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_off0000dd74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD74 5408 bytes
SHA-256: 97f1634345d1116c32740016384a1844d03165bceeb225e4aa0c512767cffe00
font_01_sfnt_off0000efea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFEA 11640 bytes
SHA-256: 235fa364b32ee27c0ee371dd5f75e52ec95d1ca504bf889c1ad19f314123b154

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