Malicious PDF — malware analysis report

Static analysis result for SHA-256 12416b2c6538a3ca…

MALICIOUS

PDF

77.8 KB Created: 2021-03-03 11:50:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1264da62a4968ea1ca483234b90aadaa SHA-1: 3815f52da7f1900b3a02024b3474fec0e8a52e08 SHA-256: 12416b2c6538a3ca6ace0a6e4d4c919ed80b7059864088b4a046b954b359de84
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://crophysi.ru/award?keyword=how+to+check+transmission+fluid+in+vw+jetta In PDF document text
    • http://pisibebix.22web.org/performance_standards_for_antimicrobial_disk_susceptibility_tests.pdfIn PDF document text
    • http://jepenufi.getenjoyment.net/kukolipumapivezonasikuxi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383680/normal_6022d583c5ef3.pdfIn PDF document text
    • https://kebusivurokolu.weebly.com/uploads/1/3/5/3/135317059/pofelevezubodaregeru.pdfIn PDF document text
    • https://cdn.sqhk.co/darojopul/h1SxVie/99280621289.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484143/normal_5fd7e82f85a87.pdfIn PDF document text
    • http://pedrons.space/sukamepixev2kj77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419626/normal_601c8866c56a7.pdfIn PDF document text
    • http://trylait.club/vegiforosiq9wiu.pdfIn PDF document text
    • https://cdn.sqhk.co/kukisigafumi/ADhgjgr/98015635976.pdfIn PDF document text
    • http://silkhfig.bid/the_lord_of_the_rings_books_hardcoverlrkyu.pdfIn PDF document text
    • https://cdn.sqhk.co/vigibizez/IidVmL6/44161247093.pdfIn PDF document text
    • http://mapugukabazewu.scienceontheweb.net/hindi_alphabets_video_download_free.pdfIn PDF document text
    • https://nazisedisan.weebly.com/uploads/1/3/1/8/131871674/gafitel.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413369/normal_5fe27a1cc1235.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://somizifiwij.epizy.com/catia_v5_airbus_training.pdfIn PDF document text
    • http://didopip.epizy.com/voxitivemosobu.pdfIn PDF document text
    • http://rosipev.rf.gd/nerafomopisijifeb.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_off0000f3fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FB 5512 bytes
SHA-256: ffdb7b4010a633d082e17b738ed01224ea936202822f5837e08412467948333b
font_01_sfnt_off000106aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106AA 10428 bytes
SHA-256: 3e75d65f311315d6d545a12813f48941c0c7ee26135c23af5624adaf8e6bc9d4

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