Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bf784f427048380…

MALICIOUS

PDF

70.0 KB Created: 2021-03-01 00:27:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7123bf80f831423fcb15f51805e5da5d SHA-1: f417e7656a43bcf3a7bac35b0507da9fd61f6146 SHA-256: 9bf784f427048380b46754970189c65c3fe6824d0874afe5efdd2fc98c494d1d
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/award?keyword=acer+aspire+e5+for+sale+in+ph In PDF document text
    • https://cdn.sqhk.co/fenazijeguk/Xjfig8P/excursiones_cruceros_por_libre_caribe.pdfIn PDF document text
    • http://begemotiks.space/taremamevelulaluzozturze.pdfIn PDF document text
    • https://fobabunopana.weebly.com/uploads/1/3/0/9/130969757/rowafixokoton_xifinara.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366317/normal_5ff88ed5850fa.pdfIn PDF document text
    • https://cdn.sqhk.co/durotula/iefGjgt/wusixuran.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454541/normal_603652d2d1140.pdfIn PDF document text
    • https://kenigoxiwe.weebly.com/uploads/1/3/0/9/130970014/265614.pdfIn PDF document text
    • http://nat-fru.space/laridivwbr7c.pdfIn PDF document text
    • https://cdn.sqhk.co/kegufamop/dTjiPhj/44578611906.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/jiwisi/ben_ten_up_to_speed_apk_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/movies4me_bollywood_movies_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/71653625174.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_off0000d5a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5A4 5216 bytes
SHA-256: 6ae697e7fbfab12d6c2250fa8f7cc45b3252bc9b52c3abce9da70e445aca0ba7
font_01_sfnt_off0000e764.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE764 10472 bytes
SHA-256: 14b6a0f2a36c16227768ad6659e4903787934262c3d6fbfa8f2b37874e2f1d67