Malicious PDF — malware analysis report

Static analysis result for SHA-256 3444b003766dbe1c…

MALICIOUS

PDF

78.7 KB Created: 2021-03-01 10:54:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3021d799fc7d230a78897d4de5b1383e SHA-1: 9659d818b466d950ec724adb4d335f3cd8d2f37c SHA-256: 3444b003766dbe1c8c79400df8cd75f4e6a527e8e682607141632e8628e981ec
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://yafferge.ru/wix?keyword=the+sword+behind+the+shield+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4416787/normal_5ff3435d29c14.pdfIn PDF document text
    • http://meetcabinets.xyz/jegerabepurezezareraxxexm.pdfIn PDF document text
    • http://aduo5.online/p90x_workout_schedule_downloadw0umd.pdfIn PDF document text
    • http://katalog-siberian-force.online/vubitenasewozovevenozandjpxa.pdfIn PDF document text
    • http://chambre.xyz/compound_interest_gcse_questions_and_answerszpp2k.pdfIn PDF document text
    • http://dayzcommunity.info/45597590481nx9hh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408992/normal_5fd96104afa29.pdfIn PDF document text
    • https://zajilonuxiwez.weebly.com/uploads/1/3/4/8/134871265/4672700.pdfIn PDF document text
    • http://lnstagram-verifedbadge.com/solar_system_simulator_androidwqwux.pdfIn PDF document text
    • http://podeves.xyz/mario_kart_tour_multiplayer_ranking_systemc2oeo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402504/normal_6021943ba17d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383565/normal_5fcbdc013916f.pdfIn PDF document text
    • http://iranomics.com/catholic_high_school_entrance_exams_for_dummiese4mqr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mojelol.epizy.com/dilbar_dilbar_dj_song.pdfIn PDF document text
    • http://regipikiwubadov.epizy.com/71098481536.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_off0000f8d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D2 5100 bytes
SHA-256: 382f6323c3eaff654144799995bf7e5fdbcf875397daacc2bb93de71d34fb41c
font_01_sfnt_off00010a31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A31 10520 bytes
SHA-256: ea827ebe8d3333ce79a42fc9ab653ba8933caab087d8b5d292d2eb1034f568c9