Malicious PDF — malware analysis report

Static analysis result for SHA-256 f596d91c6d71e871…

MALICIOUS

PDF

74.8 KB Created: 2021-06-08 09:06:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 3db5b03a548df9520dc7c7ada42064d3 SHA-1: 8822d7cee79a454c3346085b5fc63d827f2124ca SHA-256: f596d91c6d71e871da5ad06e3a0451f0caffcde23d30b3cfb09cf0d93926ec9b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pistant.ru/pbw?utm_term=%25D1%2587%25D1%2582%25D0%25BE+%25D1%2581%25D0%25BA%25D0%25B0%25D0%25B7%25D0%25B0%25D0%25BB+%25D0%25BF%25D0%25BE%25D0%25BA%25D0%25BE%25D0%25B9%25D0%25BD%25D0%25B8%25D0%25BA+%25D0%25B0%25D1%2583%25D0%25B4%25D0%25B8%25D0%25BE%25D0%25BA%25D0%25BD%25D0%25B8%25D0%25B3%25D0%25B0+%25D1%2581%25D0%25BA%25D0%25B0%25D1%2587%25D0%25B0%25D1%2582%25D1%258C PDF link annotation
    • https://karoxenerom.weebly.com/uploads/1/3/0/7/130739074/bipofugixetuz.pdfIn PDF document text
    • https://xibatelilon.weebly.com/uploads/1/3/1/6/131637149/c33ad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393521/normal_5ff6720831703.pdfIn PDF document text
    • https://vutadatibanol.weebly.com/uploads/1/3/4/8/134883393/5357126.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465007/normal_600746e34f7d1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/01d4c843-1cdd-494b-aa71-7210865d9c76/vifakimiwefixoped.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/004acfe6-8975-40c4-810c-3d322ebcc8f8/stanley_fatmax_1000_peak_amp_power_station_-_jump_starter.pdfIn PDF document text
    • http://palixazoke.pbworks.com/f/the_secret_life_of_walter_mitty_streaming_vost.pdfIn PDF document text
    • http://jebusolole.pbworks.com/f/step_up_1_pelicula_completa_en_espaol_latino_2006.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f2d5384-7540-439b-be10-901da168a4a6/19611184221.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c1e9ced-8d1a-4902-bc8c-c20cdf7fa602/69794048610.pdfIn PDF document text
    • http://kiwuwas.pbworks.com/w/file/fetch/144736404/3741137140.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92526e6d-6482-46db-866a-e7acb459c754/how_to_adjust_philips_respironics_remstar_auto_a-flex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bbed083-2fe1-491a-989e-ff9b5851a628/negorunareborixepozovav.pdfIn PDF document text
    • http://pidexuxok.pbworks.com/f/96299344387.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe7ea0d2-eb3f-4016-90b5-b7da88b53fd3/burirulal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69480615-c3ee-4b20-b09a-86c362390c04/percy_jackson_and_the_last_olympian_movie_cast.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b917124-054d-42b2-8ea0-8f7ac3af3438/does_evening_primrose_oil_help_you_get_pregnant.pdfIn PDF document text
    • http://wixugigir.pbworks.com/w/file/fetch/144458250/44875264310.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c2bd9df-2818-4a74-a1ad-1cae948b553f/windows_server_2012_r2_download_iso_32_bit_with_crack.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_off0000d8c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C8 5680 bytes
SHA-256: eac69ea2b1a7c2a6445760fb058caf1ab0d01f3515a608fd79774002ab77f525
font_01_sfnt_off0000ebe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE5 15248 bytes
SHA-256: 5e8a76d4b4b93dcea83d178cc09456acf686bed05ac66f5a8ebd0ccf3c85d02d