Malicious PDF — malware analysis report

Static analysis result for SHA-256 3596f20e6286bd92…

MALICIOUS

PDF

60.6 KB Created: 2022-09-14 05:34:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2023-12-11
MD5: 128d9476930956df4a59e033539c311a SHA-1: 9ca9eb571af5f8e688e9cabd80f4b467b4f20680 SHA-256: 3596f20e6286bd923308cf4dfb2dd5eb208adca1b2da5391ba92b663910e90d5
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9867

Heuristics 6

  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://zolegezuboz.weebly.com/uploads/1/3/4/4/134462972/6782299.pdf.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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 http://xeltuve.com/c3?utm_term=turn+off+autocorrect+samsung+s5 PDF link annotation
    • http://quocteanviet.com/img-chamthi/files/75118750941.pdfIn PDF document text
    • https://zolegezuboz.weebly.com/uploads/1/3/4/4/134462972/6782299.pdfIn PDF document text
    • http://philipp-haberland.de/images/upload/file/80809054958.pdfIn PDF document text
    • http://grupafurman.pl/!mag2011/userfiles/file/1823448095.pdfIn PDF document text
    • http://vytvarnyobchod.cz/UserFiles/File/laxubinugu.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/162a2483d9e810---buxukuletumujebowokobage.pdfIn PDF document text
    • https://figapizezedop.weebly.com/uploads/1/3/4/3/134364787/5427515.pdfIn PDF document text
    • https://latitidazus.weebly.com/uploads/1/3/4/0/134018806/mekaguxajevedar-vofonizaser-pidaxurugomuxur-xerugol.pdfIn PDF document text
    • https://cmr.qnzar.com/files/tedugukir.pdfIn PDF document text
    • https://voliguxuzewiwa.weebly.com/uploads/1/3/4/7/134762967/45efd5eb5efe22.pdfIn PDF document text
    • https://nadegogu.weebly.com/uploads/1/4/2/3/142333281/3292347.pdfIn PDF document text
    • https://dizumosurekasev.weebly.com/uploads/1/4/1/2/141257587/7023870.pdfIn PDF document text
    • https://daxexamuve.weebly.com/uploads/1/3/4/4/134446800/modadilasis.pdfIn PDF document text
    • https://guwotozoxotemu.weebly.com/uploads/1/4/2/4/142439426/zupefonoxufarulezexo.pdfIn PDF document text
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1630eec04012eb---mikazadikorisebav.pdfIn PDF document text
    • http://giorgimpianti.com/userfiles/file/mitonudi.pdfIn PDF document text
    • https://guvuzemepotusa.weebly.com/uploads/1/3/4/7/134706469/wivikojozotal.pdfIn PDF document text
    • http://sz-nuoyi.com/Upload/file/2022082300125765740.pdfIn PDF document text
    • https://static1.squarespace.com/static/604aec14af289a5f7a539cf5/t/62c236613d83d47fbe914acc/1656895073601/badshah_movie_video_songs_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aaf27c8bac0413e6f804fa/t/62cbcc1db848172a286f4d3b/1657523229829/pokemon_blazed_glazed_cheats_codebreaker.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aaf25e42d7b60106dc17aa/t/62c2fa1ced3f530d5d4e08c1/1656945181549/mixedugagisib.pdfIn PDF document text
    • https://static1.squarespace.com/static/604aeb86718479732845b7b4/t/62d8edb52900b25a044902d6/1658383798178/operaciones_con_decimales_1_eso_con_soluciones.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aaf25e42d7b60106dc17aa/t/62c29d5aa2541834b50b4d72/1656921435252/forming_storming_norming_and_perform.pdfIn PDF document text
    • https://static1.squarespace.com/static/604aea6a97201213e037dc4e/t/62c36bd2fbeebf438ee0f6f9/1656974290535/letra_junto_a_ti_maria.pdfIn PDF document text
    • https://static1.squarespace.com/static/604aebe5436e397a99d53e8a/t/62bfbabe6055590956fa2b6b/1656732350720/minecraft_rpg_map.pdfIn PDF document text
    • https://static1.squarespace.com/static/604aec14af289a5f7a539cf5/t/62b87bd1ac75ba003b79943c/1656257490866/4276464398.pdfIn PDF document text
    • https://static1.squarespace.com/static/604aebe5436e397a99d53e8a/t/62d8f81e0192bf290154eb46/1658386462637/livro_de_economia_em.pdfIn PDF document text
    • https://static1.squarespace.com/static/604aea6a97201213e037dc4e/t/62d9b056d723cf0601c2dd8e/1658433622633/msi_laptop_camera_driver_windows_10.pdfIn PDF document text
    • https://static1.squarespace.com/static/604aebe5436e397a99d53e8a/t/62d04d2431fc6b31532daabb/1657818404736/bekakegivosuposavibi.pdfIn PDF document text
    • https://static1.squarespace.com/static/604aec14af289a5f7a539cf5/t/62cae635adf700300114973a/1657464374803/dedipisegipibidasozapali.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off00009f69.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00009f69.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009f69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F69 10740 bytes
SHA-256: d1d9ab525db2335356ba47e7326447f8eb503d9f1ce4a58a18413990ecaed0d0
font_01_sfnt_off0000b831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB831 17068 bytes
SHA-256: 0ebcf528db8898a0096c94cba690422f21505bf79e96c3081817ca635bf1fa9c