Malicious PDF — malware analysis report

Static analysis result for SHA-256 1025b21a1bf0ddc8…

MALICIOUS

PDF

71.1 KB Created: 2021-03-03 05:47:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 85234fa99f593dc1bd14f13c4dae23f0 SHA-1: 1f44d4d69e57313c696fa2499dd199edc008a0c5 SHA-256: 1025b21a1bf0ddc8ced65b39d90a276e46d0f52e188883f548e109dcec3b6a23
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/award?keyword=nyssma+vocal+solo+list+level+6 PDF link annotation
    • http://femuxeririta.mygamesonline.org/pedefenogafe.pdfIn PDF document text
    • https://cdn.sqhk.co/terasovo/7rxjbij/tanks_vs_bugs.pdfIn PDF document text
    • https://menesifewo.weebly.com/uploads/1/3/0/8/130814293/6b90f99e253821.pdfIn PDF document text
    • https://cdn.sqhk.co/lakanodip/cB1RqjA/bokoj.pdfIn PDF document text
    • https://romiwewigases.weebly.com/uploads/1/3/2/6/132682929/9184102.pdfIn PDF document text
    • https://cdn.sqhk.co/susiwozobo/sgiojca/emoji_wallpaper_hd_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/Bgckbih/among_us_sabotage_sound_mp3.pdfIn PDF document text
    • http://xamawigokoke.mygamesonline.org/tecumseh_hm100_carburetor_float_adjustment.pdfIn PDF document text
    • http://lajodibibodi.getenjoyment.net/the_tragedy_of_macbeth_act_1_scene_7_summary.pdfIn PDF document text
    • https://desalipi.weebly.com/uploads/1/3/2/6/132681317/f03551db46377be.pdfIn PDF document text
    • https://cdn.sqhk.co/tojofelekob/eibtfie/nintendo_switch_buy_online_philippines.pdfIn PDF document text
    • https://safamitiwifiro.weebly.com/uploads/1/3/0/7/130739579/ef24b91.pdfIn PDF document text
    • https://cdn.sqhk.co/pelotuwew/Ihajhgj/all_star_soccer_academy_michigan.pdfIn PDF document text
    • https://cdn.sqhk.co/bexikerez/ifdhggd/fosat.pdfIn PDF document text
    • https://cdn.sqhk.co/feguzuvubut/ii6Kijd/xuruzapejel.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pujumek.myartsonline.com/philosophy_of_punishment_book.pdfIn PDF document text
    • http://tavamikilav.myartsonline.com/how_to_clean_igloo_countertop_ice_machine.pdfIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/home_assistant_automation_editor_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/portfolio_template_indd.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/najipusinagij.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_off0000d831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD831 5136 bytes
SHA-256: da293495cefc7eb027450ac430e7733c45d2b884a629aac0b591cee54048ab5a
font_01_sfnt_off0000e9ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9AC 10640 bytes
SHA-256: 35971664826bb68d5c38edc562de97843595da6c8289dc11126cdef8c7c051f7

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