Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e1f45cff1ae5f25…

MALICIOUS

PDF

79.6 KB Created: 2021-05-11 14:41:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0fcfad6d1bf09895cec3b228bbde9444 SHA-1: 740cdefab847578d100c03b53e5b3ea30e88295a SHA-256: 1e1f45cff1ae5f25ab382734cbecaec6ba3fb1ac77085a72880d273a9cac2aa6
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'baarspo.ru', which is likely used to host a malicious payload or redirect to a phishing site. The document body, though heavily obfuscated, contains text related to downloading a Bible online, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/strik?utm_term=la+biblia+en+linea+gratis+para+descargar
    • https://static.s123-cdn-static.com/uploads/4425217/normal_5ff9b72ca0d03.pdf
    • https://cdn-cms.f-static.net/uploads/4481673/normal_60151e7c8da28.pdf
    • https://static.s123-cdn-static.com/uploads/4392872/normal_5fdf3a931bac5.pdf
    • http://mishgen.com/5_reliable_and_unreliable_sources_of_health_information_and_productsdrblx.pdf
    • http://snail-case.store/nafujtc5mm.pdf
    • http://goodsfor.life/all_feeling_songs_tamillnkju.pdf
    • http://justamorem.com/star_wars_lost_stars_mangakakalotqn5tr.pdf
    • http://smeh-mif.space/ub40_songs_mp3_downloady9fxs.pdf
    • https://cdn.sqhk.co/mojobugoge/CY32jje/56756159190.pdf
    • https://static.s123-cdn-static.com/uploads/4465907/normal_60007bbea5a4b.pdf
    • http://zisuroto.mygamesonline.org/51994110261.pdf
    • https://cdn.sqhk.co/junikesiza/EMigOO9/ohio_guidestone_medina.pdf
    • https://cdn.sqhk.co/midijanere/kSigHif/microsoft_pinball_arcade_online.pdf
    • https://cdn.sqhk.co/goxobuve/aDEicW8/treasure_island_for_sale_florida.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fivebo/85993309140.pdf
    • https://s3.amazonaws.com/tobobowu/10069045511.pdf
    • http://lixugafepujijoj.onlinewebshop.net/segir.pdf
    • https://s3.amazonaws.com/gozilum/microbiologia_medica_gratis.pdf
    • https://s3.amazonaws.com/wozoxub/ditavuzutajefedemumu.pdf
    • http://xafibejijopo.atwebpages.com/spring_boot_interview_questions_and_answers.pdf
    • https://s3.amazonaws.com/tetofamuxulil/67089289033.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f76d.bin
2081c2058854fe5c603a5463bb0a4474bc99296f220b1ea7763f0e46ce3c8495
pdf-font-stream PDF embedded font (sfnt) at offset 0xF76D 5320 bytes
font_01_sfnt_off00010990.bin
1fde25c648629642bcd47d097463fab53c6e81db7b5097f28e890ce8d223c0d9
pdf-font-stream PDF embedded font (sfnt) at offset 0x10990 11716 bytes