Malicious PDF — malware analysis report

Static analysis result for SHA-256 02b24ae97104538c…

MALICIOUS

PDF

67.2 KB Created: 2021-02-14 21:08:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5050c5707c0c807fa420665e704973dc SHA-1: 218935a442970c44420372044ef42dc735f76dae SHA-256: 02b24ae97104538c9f3549559ea6e9171fbc87cee6467d12a6ea23bd8927ea5c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://seumenha.ru/wix?keyword=the+invisible+library+pdf PDF link annotation
    • https://cdn.sqhk.co/sebudesusoj/jdih5gg/wijidewafewunimetela.pdfIn PDF document text
    • https://cdn.sqhk.co/dibitarebizu/6mpm4ih/stickman_master_archer_legends_redeem_codes.pdfIn PDF document text
    • http://pressit.space/meteor_shower_california_april_2020dot1s.pdfIn PDF document text
    • https://zitejapaj.weebly.com/uploads/1/3/1/8/131872087/doxadisivefifojizij.pdfIn PDF document text
    • http://vashmaster.info/periodic_boundary_conditionsfc4mu.pdfIn PDF document text
    • http://sellforce.ru/berthing_report_of_bmctplsj4x3.pdfIn PDF document text
    • https://cdn.sqhk.co/jexerigix/idhj1WR/92644783648.pdfIn PDF document text
    • https://zitadinenere.weebly.com/uploads/1/3/1/8/131871439/lisesukufunewu-dipejitave-silisekaritar-kiwanu.pdfIn PDF document text
    • https://cdn.sqhk.co/zasokolof/hhgejfj/glory_of_generals_2_mod_apk_free_download.pdfIn PDF document text
    • http://bristol-yalta.run/gulobejonajegijfjzvv.pdfIn PDF document text
    • https://cdn.sqhk.co/fenazijeguk/0jbPTgf/game_vui_join_clash_3d.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/MLgiI1i/break_the_prison_prison_4_level_3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/chak_de_india_full_movie_vidmate.pdfIn PDF document text
    • https://s3.amazonaws.com/dowadotiju/villanelle_novels_free.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_off0000cb15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB15 5380 bytes
SHA-256: 3e6d66981f723df1d554e8d4249ccc998b6bbc6276d4d3650e32053151ce7321
font_01_sfnt_off0000dd5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5F 10256 bytes
SHA-256: a41f392a89b0893e3accf95ea896ae975e1177cb7d44b55b4da0dd7bcf0cdd78