Malicious PDF — malware analysis report

Static analysis result for SHA-256 b94de7589e20efac…

MALICIOUS

PDF

86.5 KB Created: 2021-04-13 22:35:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 37ba6cf499c8b492879958bd5a451476 SHA-1: 5b6340b40daaa0220b88ca9acf2fb12f940b8a30 SHA-256: b94de7589e20efacf8c77a3d7bc074fe6f5cb8028884927ac124fc24ec466898
66 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • 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://dafemum.ru/strik?utm_term=what+are+the+dimensions+of+an+ipod+touch PDF link annotation
    • http://submonster.xyz/ladawunaxigipezamcsaoq.pdfIn PDF document text
    • http://vvinorama.fun/internal_combustion_engine_purposexsvof.pdfIn PDF document text
    • https://cdn.sqhk.co/dagozuwemep/0dIicLe/kexogarozur.pdfIn PDF document text
    • http://navalny.design/bise_bwp_board_date_sheet_2019tyd63.pdfIn PDF document text
    • https://tevoletefe.weebly.com/uploads/1/3/1/6/131606261/53bbfb22.pdfIn PDF document text
    • http://xsafak.com/nixotesapehn3z8.pdfIn PDF document text
    • https://cdn.sqhk.co/bevoroxur/t1Fgjgc/spectacled_bear_breeding_habitat.pdfIn PDF document text
    • http://ogranicbio.space/what_role_does_religion_play_in_the_socialization_processj51hn.pdfIn PDF document text
    • http://mini-cam1.club/91690875328w7g79.pdfIn PDF document text
    • https://bevazamosip.weebly.com/uploads/1/3/5/3/135345421/a252322b27b5b20.pdfIn PDF document text
    • http://sodahq.pro/78251682339ismib.pdfIn PDF document text
    • https://tiramanab.weebly.com/uploads/1/3/1/8/131856622/6261621.pdfIn PDF document text
    • http://relax35.ru/que_es_mecanico_industrial9dmc3.pdfIn PDF document text
    • http://my-favshopc.online/konotah9n2o.pdfIn PDF document text
    • https://nodifolosorak.weebly.com/uploads/1/3/4/7/134758422/tasisivawuxofonomozi.pdfIn PDF document text
    • https://zodaribidibukez.weebly.com/uploads/1/3/4/7/134716266/nukawidinedelu.pdfIn PDF document text
    • http://monoga.space/68481279339ztpij.pdfIn PDF document text
    • http://xsale.trade/league_of_guessing7xhq0.pdfIn PDF document text
    • http://daddytestit.xyz/best_natural_pet_urine_odor_removerplh3t.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/domegagowevag/miwefibowazufidavo.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/formato_para_realizar_un_analisis_de_vulnerabilidad.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/what_does_chick_fil_a_starting_pay.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/80733489753.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_off000112e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112E9 5376 bytes
SHA-256: b8021d11fb59a35a1cea37ce744af9151bd967bb5f8d11a91646ec03ab1a5719
font_01_sfnt_off00012517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12517 11360 bytes
SHA-256: 45ed39f2f9395daed2e36f53ec7ec4dfec7526961e39e00b88466e5ad094966c

Open this report in the interactive analyzer, or submit your own file for analysis.