Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d6a5553b2d9fae4…

MALICIOUS

PDF

69.8 KB Created: 2021-02-18 00:14:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e75547d9f2ac57ff1d5a2e8ca45a7c29 SHA-1: 075e2894fd3706c0d5c956ec46c41005b7528caf SHA-256: 7d6a5553b2d9fae4d5d250cc225e5ba07753a402767f37ba3df96fb648c8d2ca
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bologen.ru/123?utm_term=what+do+mean+by+interest+group PDF link annotation
    • http://ins.expert/wobujilleejw.pdfIn PDF document text
    • https://cdn.sqhk.co/lanumakefu/hhji9jg/funny_sound_effects_for_video_editing.pdfIn PDF document text
    • https://dorikorojuj.weebly.com/uploads/1/3/3/9/133987202/nitowadofodiweki.pdfIn PDF document text
    • https://cdn.sqhk.co/nolovojawek/hphdidh/17968019570.pdfIn PDF document text
    • https://xuwogufovesuvem.weebly.com/uploads/1/3/1/4/131406895/bukevi_winuxoma_damezufipop.pdfIn PDF document text
    • http://bestunew.xyz/57967413935kkdqg.pdfIn PDF document text
    • http://xrootunited.com/miracle_box_frp_unlockrkizn.pdfIn PDF document text
    • https://naluzakagowu.weebly.com/uploads/1/3/1/4/131411806/9234704.pdfIn PDF document text
    • https://turudesufexo.weebly.com/uploads/1/3/4/1/134131379/c284c058e3381a.pdfIn PDF document text
    • https://jibijuzevigux.weebly.com/uploads/1/3/5/3/135333604/5113589.pdfIn PDF document text
    • https://jojesiwanoj.weebly.com/uploads/1/3/3/9/133986560/vovitixonojavej.pdfIn PDF document text
    • http://reduslim-shop.website/tda_mmd_models6ownk.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/jixeremipet/bounce_game_cheat_codes_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/xijilesuzuxo/blank_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/audio_songs_telugu_lo_ing.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_off0000d1ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1EA 5596 bytes
SHA-256: 0d4b0bb244079218a5ccbbc859c680bdf3868a97f6630eee0b5dae41f89cb583
font_01_sfnt_off0000e4d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D3 11016 bytes
SHA-256: 04a771d13d38870ab61a2b02275ad32f54f3a2af060bac130c4df9e2bd14f964