Malicious PDF — malware analysis report

Static analysis result for SHA-256 5de3c64fb37d7b06…

MALICIOUS

PDF

69.6 KB Created: 2021-03-02 15:16:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 23ce9f55e3f28e1186bcf6b0d6532a2c SHA-1: 985c6401af42d5ccdaad0c53995710408d5b5638 SHA-256: 5de3c64fb37d7b060f28b56f278569d73a66512220133526c3dc99759985a40b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/award?keyword=thetford+toilet+valve+42049 PDF link annotation
    • http://duzusedolatepe.mypressonline.com/can_i_lose_weight_on_a_1400_calorie_diet.pdfIn PDF document text
    • https://bolumuratojepo.weebly.com/uploads/1/3/4/7/134749128/wokaxivajoxu-pamakib-wujananiregedev-tisopado.pdfIn PDF document text
    • https://wowavimisaken.weebly.com/uploads/1/3/0/8/130814021/43ea49cd.pdfIn PDF document text
    • https://teworovesub.weebly.com/uploads/1/3/0/7/130775402/2649142.pdfIn PDF document text
    • http://biwedujurar.mywebcommunity.org/11706396506.pdfIn PDF document text
    • https://penonogam.weebly.com/uploads/1/3/4/0/134012545/6418413.pdfIn PDF document text
    • http://bovewitavivebu.getenjoyment.net/xevatiwitepekujiwatefat.pdfIn PDF document text
    • http://davupopebuwiser.sportsontheweb.net/zeripexav.pdfIn PDF document text
    • http://dakisemakegag.sportsontheweb.net/dan_brown_robert_langdon_books_movies.pdfIn PDF document text
    • http://bagerisevi.scienceontheweb.net/u_verse_remote_wont_turn_on_samsung_tv.pdfIn PDF document text
    • http://mushygushysayings.com/kefagewijmvuk.pdfIn PDF document text
    • http://thefortykuti.com/9735377315007bkw.pdfIn PDF document text
    • http://folugomobok.getenjoyment.net/97391947310.pdfIn PDF document text
    • https://nezivubu.weebly.com/uploads/1/3/1/3/131384481/1792467.pdfIn PDF document text
    • https://dunexekexafu.weebly.com/uploads/1/3/4/6/134622254/putonaninadajoxe.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/mamibis/68394739816.pdfIn PDF document text
    • http://noroved.myartsonline.com/call_of_duty_update_size.pdfIn PDF document text
    • http://rabatelekovufar.myartsonline.com/how_to_repair_your_heart_after_smoking.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/84590367077.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_off0000d28d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD28D 5344 bytes
SHA-256: 1abac98d4cb9418137a8876169be2d983aee8e3646eb09f88d1e7b0ed53e0477
font_01_sfnt_off0000e4b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B9 10856 bytes
SHA-256: 32308e6d322c4a8b41be3f34f48ae0dfb779f6f0f41b2a98b6d30e6f91dd5927