Malicious PDF — malware analysis report

Static analysis result for SHA-256 59dca5d02fb14250…

MALICIOUS

PDF

62.6 KB Created: 2021-02-22 17:50:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d9a8f93aefb434c9296e16e44fe199fe SHA-1: ae941f9c4ebbbd1f1b2ffe5e46f183d1e0b91b04 SHA-256: 59dca5d02fb142506c78016c7c154d2004482294d7ea113771d6e57efefb3412
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://baarspo.ru/wix?keyword=chapter+7+mid+chapter+quiz+answers+algebra+1 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386829/normal_602a88fcd6f30.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/fhcEnha/30119477598.pdfIn PDF document text
    • https://cdn.sqhk.co/lasanamemego/gdup8jd/ramunurukupefuporanotis.pdfIn PDF document text
    • http://orbitan.fun/marvel_ultimate_alliance_2_ps2_trivia_answersiqrm6.pdfIn PDF document text
    • https://cdn.sqhk.co/xisiwuba/gc8ghgi/nintendo_switch_deals_australia.pdfIn PDF document text
    • https://cdn.sqhk.co/mowanideju/iKhgjhu/world_conqueror_3_conquer_world_1939.pdfIn PDF document text
    • http://zagimafe.22web.org/28937854528.pdfIn PDF document text
    • http://repovor.22web.org/mapogixexebuno.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tereralubo.epizy.com/jovojika.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/bupitiruvalodu.pdfIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/picsart_photo_editor_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/4605412551.pdfIn PDF document text
    • http://watafewajur.rf.gd/appear_sound_effect_free.pdfIn PDF document text
    • http://lafeseg.rf.gd/cooked_pork_belly_nutrition_information.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_off0000b5ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5FF 5932 bytes
SHA-256: a4409a6cc10812872f08b43e8e6964b8c1ae41eb620e4228276bcc3b05daa62d
font_01_sfnt_off0000ca1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA1A 10396 bytes
SHA-256: 42a230f8da4e5636bbdd8967030293b9b930590dfb65fcad8db731ac311af5c0