Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae2ba875a1bc616b…

MALICIOUS

PDF

76.7 KB Created: 2021-02-22 08:12:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b2a1172002807709e9c3a0c993d0389c SHA-1: 08b4983e0817806f7a6a318c5af193d0e0e4599e SHA-256: ae2ba875a1bc616b587454e01a0082b837fcae7dd681a725a9959912cfdf8511
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/123?utm_term=best+penny+stock+under+10+cents PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450138/normal_6018c552d688a.pdfIn PDF document text
    • http://cashtanks.fun/delovudibuxutt7ror.pdfIn PDF document text
    • https://cdn.sqhk.co/levowexesu/nBEjhgf/world_map_wonders_and_landmarks_of_the_world.pdfIn PDF document text
    • http://fastpeysistem.online/55848446560mnjty.pdfIn PDF document text
    • http://teenagetutor.online/mudding_drywall_seams_videoktirj.pdfIn PDF document text
    • http://netewe5.xyz/pukunewafawekupakejug7bm2.pdfIn PDF document text
    • http://kzrovk.xyz/947176764081xvkt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393016/normal_6027d312a7007.pdfIn PDF document text
    • http://healthit.space/aditya_hridaya_stotram_sanskrituk09o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454988/normal_5fe5a581490d9.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/nazekisigiduz/filling_self_performance_appraisal_form.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/camelot_information_systems_inc.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/13714021988.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/nuzakabezodebik.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/wildgame_innovations_feeder_says_jam.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_off0000f009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF009 5232 bytes
SHA-256: 6b1c98801c390f9d2337c441233b52a7a448afec6c52f4ffdc75857d262c338a
font_01_sfnt_off000101ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101FF 10600 bytes
SHA-256: 2597adb391349d9053d772f421a0ac8bda6ae857045da49ba08727f35ba2b5ec