Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a7c878cb1578359…

MALICIOUS

PDF

73.0 KB Created: 2021-02-27 08:55:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d73576a973f4339f737a6790b8cdfade SHA-1: 998b6c905baf49868cdcd9fe2d6d5fce2b22f5dc SHA-256: 6a7c878cb157835988ed6eab9fc8146c2bd76143ba61d8cc5ea716d426ae2959
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://maypoin.ru/award?keyword=rt+n66u+router PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4380211/normal_5ffa07bd48ef6.pdfIn PDF document text
    • https://lurakowufo.weebly.com/uploads/1/3/4/4/134457973/kuwuj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386092/normal_6033a56a47eef.pdfIn PDF document text
    • http://moreprodukti.com/kigabopdocgo.pdfIn PDF document text
    • https://doliwalesi.weebly.com/uploads/1/3/0/7/130776147/fupud-dolimip-nigemenumedisiw-jurotilowusedi.pdfIn PDF document text
    • http://huaweistoreukr.xyz/android_7_minimum_system_requirementsprb7p.pdfIn PDF document text
    • http://rakodunugi.iblogger.org/androidx_fragment_ktx.pdfIn PDF document text
    • https://kulipimeg.weebly.com/uploads/1/3/2/6/132695915/1194373.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453103/normal_5ff3302bf4047.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380682/normal_5fca8614d16a7.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/qlcjcib/oculus_vr_space_sim.pdfIn PDF document text
    • https://cdn.sqhk.co/lumolixuwo/5lh7aZH/xejawonukanozaxuzi.pdfIn PDF document text
    • https://cdn.sqhk.co/xawobovuji/AYzQUgi/zombie_original_song_lyrics.pdfIn PDF document text
    • http://wownatural.fun/kotafiwalah4l7f.pdfIn PDF document text
    • http://xuvepawa.iblogger.org/75754159821.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/vinejivunitego/how_to_use_mitsubishi_electric_heater.pdfIn PDF document text
    • http://fakadigat.epizy.com/bsc_full_form_in_telecom.pdfIn PDF document text
    • http://lesasesodimavun.epizy.com/kozasi.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/bakliwal_entrance_exam_papers.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/barakhadi_in_english_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/88392009899.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_off0000dcaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCAF 4420 bytes
SHA-256: ef11ffe8d600667e87b0ce0ecc45426910f658656eb666aded80a384ec6d9260
font_01_sfnt_off0000ebcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBCB 15960 bytes
SHA-256: f6fe5ab053cac7d59286f51fb4c73109493d38f66fb53eeb09ea0b4c337b73ea

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