Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e41a86c9529043…

MALICIOUS

PDF

141.0 KB Created: 2021-04-01 10:52:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 612032a7885bcec8a78587b43166d89c SHA-1: d687611965630bacbfda67a6a5cfe88fee3df46c SHA-256: 00e41a86c95290436bbab3628c870961344e38d1c72828a498dbda676d2e055d
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many pointing to disposable domains, suggesting a link farm or phishing lure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://zajinet.ru/award?keyword=artie+shaw+clarinet+method+pdf PDF link annotation
    • https://mifopubulu.weebly.com/uploads/1/3/1/6/131637027/8625904.pdfIn PDF document text
    • http://totaxusozavu.sportsontheweb.net/goxanivufi.pdfIn PDF document text
    • https://sanepawoja.weebly.com/uploads/1/3/4/5/134579143/wafarawuju_panam_moxezuxunija_dazetatuk.pdfIn PDF document text
    • http://rifosavepi.22web.org/novela_aura_de_carlos_fuentes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372377/normal_5feb047c4b74b.pdfIn PDF document text
    • https://nesotufofiwin.weebly.com/uploads/1/3/1/3/131381712/potazasewoberezef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463538/normal_5ff7895c8b0c5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422876/normal_6003dd848b7b9.pdfIn PDF document text
    • http://xusakarezexalu.iblogger.org/70457467207.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418791/normal_5fd60f02ca1be.pdfIn PDF document text
    • http://yoptan.space/gafimuzpzlo8.pdfIn PDF document text
    • http://dotavulilego.mypressonline.com/nupazugusezexemas.pdfIn PDF document text
    • http://wefigofozotime.22web.org/why_do_i_keep_waking_up_crying_from_my_dreams.pdfIn PDF document text
    • http://geosen.net/long_division_with_exponents_worksheetufudx.pdfIn PDF document text
    • http://jetavof.sportsontheweb.net/78216642202.pdfIn PDF document text
    • http://tonerinkstore.com/9355916969zdsr8.pdfIn PDF document text
    • http://momentshop.space/domuwigqsmk.pdfIn PDF document text
    • http://rixiroremijiw.22web.org/wheel_of_fortune_game_answers_thing.pdfIn PDF document text
    • https://towoxaji.weebly.com/uploads/1/3/0/7/130740158/jobode_mufolav.pdfIn PDF document text
    • http://presentinsta.online/motederosesowijelyf0m.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/wikurixobelu/year_5_printable_worksheets.pdfIn PDF document text
    • http://sukijikulo.epizy.com/how_many_cups_of_sweet_potatoes_equal_1_pound.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/alelo_recesivo_y_dominante.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/bokavuxa.pdfIn PDF document text
    • http://bugenerefajujus.atwebpages.com/hunger_games_book_part_2_summary.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001ccdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CCDF 5476 bytes
SHA-256: b584e86307445f7c2f758e39ce90164a92aa00bf0bd58307c065f71c5814fcf4
font_01_sfnt_off0001df69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DF69 16624 bytes
SHA-256: c8250d254b47f6ab3f61542d3efff18ab87f4f4769190b81feedf3d8b479e340
font_02_sfnt_off00020f18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20F18 16120 bytes
SHA-256: 46d9b83afd797048ab251ddfc9ca9a6db44f3280724c231f6a80a061bcc6fc12