Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c7037512774e5de…

MALICIOUS

PDF

69.0 KB Created: 2021-02-06 15:50:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a115db3f8dce4b10556cc5e038320b74 SHA-1: a093081d0ea5243523d45e3db84b80097f915dee SHA-256: 6c7037512774e5ded26fb137109feadd8c7b7a60fd2ef9f944080f138d4fdccc
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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/wb?keyword=amelie%20poulain%20piano%20sheet%20music%20free PDF link annotation
    • https://cdn.sqhk.co/tubawonidas/igdIkVa/snapchat_logo_aesthetic_red.pdfIn PDF document text
    • http://tokigarodam.22web.org/84822565107.pdfIn PDF document text
    • https://pegepigav.weebly.com/uploads/1/3/4/4/134481067/moxofipibi_juzawagexodavu_vexitedazej.pdfIn PDF document text
    • https://cdn.sqhk.co/jebavimot/0hgheIo/middle_east_gunner_free_shipping_code.pdfIn PDF document text
    • https://nujirami.weebly.com/uploads/1/3/1/3/131384028/2775726.pdfIn PDF document text
    • http://comp-arenda.site/mandatos_formales_worksheet_answersgqsig.pdfIn PDF document text
    • http://temezisabekazev.iblogger.org/73672622761.pdfIn PDF document text
    • https://cdn.sqhk.co/nawiwola/ZZMDjiW/tilajigenagufed.pdfIn PDF document text
    • https://cdn.sqhk.co/mivijigonof/qcjexjO/magic_fluids_free_touch_screen_live_wallpaper_iphone.pdfIn PDF document text
    • http://feelslike35.com/funny_laughing_sound_effects_free_download5bfme.pdfIn PDF document text
    • http://gratoraama.space/vigovifokunipx05jg.pdfIn PDF document text
    • http://meetporte.xyz/jojofuzekaxusax77rrp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kezuxitejapub.epizy.com/bsf_online_registration_form_2018.pdfIn PDF document text
    • http://kutoduno.rf.gd/kunugudepavose.pdfIn PDF document text
    • http://pitepune.epizy.com/mathworksheets4kids_identifying_inequalities_answers.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_off0000cd2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD2A 5244 bytes
SHA-256: eef6ae9266ba05d93c8efee4224860ae44e6147f74986293a2cb0a0b6923fed5
font_01_sfnt_off0000ded3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDED3 11968 bytes
SHA-256: 3360246ea0e596b3d5ab1034b31e0024dc702241e6baadd7ad6ae809327e877b