Malicious PDF — malware analysis report

Static analysis result for SHA-256 73fc95a501fd8efc…

MALICIOUS

PDF

75.1 KB Created: 2021-01-17 22:29:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9dc2d98a06494c3cad8d8bd4717e6ed1 SHA-1: d61848d4b151fa640604858d559b454364b666db SHA-256: 73fc95a501fd8efc2ac9dd025a646ce9b33ae0015ef347df2ee85b824c1a2074
126 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
  • 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.
  • 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://trafffe.ru/wb?keyword=idle%20construction%203d%20game PDF link annotation
    • https://site-1171628.mozfiles.com/files/1171628/spellspire_xbox_one_achievements.pdfIn PDF document text
    • https://site-1166082.mozfiles.com/files/1166082/kingdom_rush_origins_mod_apk_4_0_12.pdfIn PDF document text
    • https://cdn.sqhk.co/kexofodatop/ibnqMuz/jelly_filled_pillow_mints.pdfIn PDF document text
    • http://tewazezila.66ghz.com/bahamut_lagoon_snes_rom.pdfIn PDF document text
    • https://cdn.sqhk.co/jafipago/ibiaagi/hmrc_online_vat_chat.pdfIn PDF document text
    • https://site-1171784.mozfiles.com/files/1171784/3d_mmo_villagers_heroes.pdfIn PDF document text
    • https://site-1176402.mozfiles.com/files/1176402/pazesapalodisa.pdfIn PDF document text
    • https://cdn.sqhk.co/remowiwa/jfggjcx/subway_surfers_unblocked_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xoxemofunox.epizy.com/android_game_cheat_free.pdfIn PDF document text
    • http://perotufusutukes.epizy.com/inequalities_on_number_line_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/80313366979.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/kudovolezerizotenifim.pdfIn PDF document text
    • http://vekujekodabudu.epizy.com/corbett_maths_5_a_day_october_answers.pdfIn PDF document text
    • http://xumugipetoje.epizy.com/android_9_pie_con_miui_10.pdfIn PDF document text
    • http://gozotonitiki.epizy.com/51111581716.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_off0000e88b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE88B 5360 bytes
SHA-256: b34af2b835fa05b8e273b9b68eeef0f24443a4f8428affedee9f10488245cb7c
font_01_sfnt_off0000faac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAAC 10788 bytes
SHA-256: f835c8b376e316705a257702629568439c5c0fe3a0d196be6e915db193291c97