Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdb3e21f2a7a4c21…

MALICIOUS

PDF

74.1 KB Created: 2021-02-27 01:27:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6a19c474598d41025653bb210835165a SHA-1: 020df4fbf9240998ed574527498c4b5b6779a2a3 SHA-256: bdb3e21f2a7a4c215f81fb3393f741b6e964ac73065e6180cf20d824a19c8f1a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://soxebez.ru/award?keyword=what+time+does+pre+market+start+on+robinhood PDF link annotation
    • https://cdn.sqhk.co/ruzemesafe/dzHgcgd/nerikemarazimuzejixi.pdfIn PDF document text
    • http://rutidewebatodug.iblogger.org/sense_and_sensibility_chapter_24_summary.pdfIn PDF document text
    • http://tomandbxof.site/edexcel_a_level_organic_chemistry_notesel1fu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449004/normal_600f766dea5e9.pdfIn PDF document text
    • http://coolstudent.space/maytag_neptune_washer_mah5500bww_bearing_replacement_kit8j68u.pdfIn PDF document text
    • https://cdn.sqhk.co/vizinifum/fjagcgf/55618985215.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379474/normal_601521edcd3cd.pdfIn PDF document text
    • http://experiment.website/57821643325p6u8r.pdfIn PDF document text
    • https://cdn.sqhk.co/masamiwe/S3IhTy5/skulduggery_meaning_etymology.pdfIn PDF document text
    • https://cdn.sqhk.co/devisojop/fgiOsjj/73477486641.pdfIn PDF document text
    • http://yozi.store/82193155241hok9m.pdfIn PDF document text
    • http://prizinsta365.website/b_extract_form_rto_karnataka_onlinel00vo.pdfIn PDF document text
    • https://fabirakarag.weebly.com/uploads/1/3/2/7/132710689/04e834f8a.pdfIn PDF document text
    • http://onesmall.space/nasejilikumezazozitebmhaie.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451021/normal_603334506c141.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450640/normal_6022c315d1e87.pdfIn PDF document text
    • http://samoe-samaya.ru/265015505236re25.pdfIn PDF document text
    • http://ecosbor.net/tokyo_ghoul_manga_volumes_1-14q34ut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE400 5384 bytes
SHA-256: 2c94559a181894c48071f08cbea1541fc66154cc68fa2cdb801ecc1306e4ccce
font_01_sfnt_off0000f626.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF626 10792 bytes
SHA-256: 1e446dff61308786186daee9a82d49d6a6d49803bce5f4b52b096ece7c07e10c

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