Malicious PDF — malware analysis report

Static analysis result for SHA-256 cee5ddab18baf907…

MALICIOUS

PDF

63.6 KB Created: 2021-02-14 21:55:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: adb7ef162f08734bdc70fba43d94d038 SHA-1: 715c2cd755bc5eae8eaf455ea536e613d7b93bea SHA-256: cee5ddab18baf9071bf92a2b3469cdb81031fdd941876153422726053132aa4b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/wix?keyword=ap+biology+chapter+41+reading+guide+answers PDF link annotation
    • https://cdn.sqhk.co/xovikojux/jaKghdm/wood_cutter_project_report.pdfIn PDF document text
    • https://cdn.sqhk.co/pedidagow/jfpTpTD/wativuvidalesoterigesev.pdfIn PDF document text
    • https://meboropob.weebly.com/uploads/1/3/2/7/132740462/4827529.pdfIn PDF document text
    • https://cdn.sqhk.co/zubavagi/ibij5jf/diniposupiniweno.pdfIn PDF document text
    • http://fesavuxofogegil.iblogger.org/zugatibokakexujiwusamulul.pdfIn PDF document text
    • https://cdn.sqhk.co/budajawisore/ixrvaRU/lixulugavidozozenupe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376856/normal_60185003dd481.pdfIn PDF document text
    • http://how2clever.com/puvazopadisogapjqhd.pdfIn PDF document text
    • https://mexilaret.weebly.com/uploads/1/3/0/7/130775974/luxikojedupugep_lakogapuka_loxivo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460694/normal_5ffa6bd29f938.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419832/normal_5fc667ea6c941.pdfIn PDF document text
    • https://cdn.sqhk.co/tinipuded/efhjhdz/gunship_battle_helicopter_mod_apk_unlimited_money.pdfIn PDF document text
    • https://cdn.sqhk.co/jigugabopu/icN2yGC/slot_machine_games_with_bonus_rounds.pdfIn PDF document text
    • http://findfreegirl.com/free_download_conflict_desert_storm_2_pc_gameznxus.pdfIn PDF document text
    • https://bexenexitefixu.weebly.com/uploads/1/3/4/7/134725849/4984522.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/ayKiejd/world_of_warcraft_eastern_kingdoms_map.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424010/normal_6018f7d885c3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443821/normal_601d31fa4c97e.pdfIn PDF document text
    • https://cdn.sqhk.co/vugomupuzisa/3vgPEhc/88368586966.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pubamawuxa.epizy.com/new_dj_audio_songs_telugu.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_off0000bc06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC06 5800 bytes
SHA-256: d9540557d8c11737720153ab37f0d552f7cd2f38743a4d89649b8cb2290432da
font_01_sfnt_off0000cfd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFD8 9728 bytes
SHA-256: 755a07cc36583fe5677f024da8562bb4b4c33106a3fe8d181eb127896a5f5f52

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