Malicious PDF — malware analysis report

Static analysis result for SHA-256 611d46aecd1cc223…

MALICIOUS

PDF

85.1 KB Created: 2021-04-28 16:45:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d7f328187abe419cabad630508986ef SHA-1: de982207fc5addd1b5902ed89063840a49974b25 SHA-256: 611d46aecd1cc22376c425c2317febdc97003db9d4aa43cbd9f24fc9aaa4e20b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While the document body is heavily obfuscated, the presence of an external URI and the overall verdict point towards a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/strik?utm_term=what+is+a+hash+in+computer+science
    • https://static.s123-cdn-static.com/uploads/4449181/normal_5fcc33db3bf3e.pdf
    • http://gasomenuza.iblogger.org/inteligencia_emocional_definicion_segun_autores.pdf
    • http://dorugatutaxovi.scienceontheweb.net/22533887468.pdf
    • http://sodowetan.mywebcommunity.org/92797457359.pdf
    • https://kekoweditolig.weebly.com/uploads/1/3/2/6/132683085/4033960.pdf
    • http://gujinir.22web.org/pozon.pdf
    • http://vurovolapoza.mygamesonline.org/walirojadolike.pdf
    • https://cdn.sqhk.co/zusisoko/ajfsgdd/king_of_avalon_kvk_tips.pdf
    • https://cdn.sqhk.co/bidogefapo/gdGFidG/7270418901.pdf
    • http://jonebukusopovet.mygamesonline.org/charles_darwin_origin_of_species_first_edition.pdf
    • https://cdn.sqhk.co/venifirub/vqjiaie/91937484600.pdf
    • http://jalojewaga.mypressonline.com/wild_animals_information_in_english.pdf
    • https://cdn-cms.f-static.net/uploads/4386607/normal_5feaf5321e96b.pdf
    • https://cdn-cms.f-static.net/uploads/4500692/normal_602cb35a60293.pdf
    • http://xowivek.iblogger.org/arkham_asylum_riddler_trophy_guide.pdf
    • https://cdn-cms.f-static.net/uploads/4389824/normal_5fd7cd62c74b5.pdf
    • https://bojifigo.weebly.com/uploads/1/3/4/8/134847606/viwitexekigodijoka.pdf
    • https://cdn.sqhk.co/mujowofapubi/Eie2jdV/norizubomefixir.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bisapovepizaj/vonibojigadukono.pdf
    • https://s3.amazonaws.com/kukupunopedon/examiners_report_acca_sbl.pdf
    • https://s3.amazonaws.com/xanunafojuloki/badlands_wow_classic_guide.pdf
    • http://botemunem.epizy.com/mekewi.pdf
    • https://s3.amazonaws.com/rojalexipokadaz/50240445996.pdf
    • https://s3.amazonaws.com/setaxilitozuko/apollo_twin_mkii_duo_vs_quad.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_off00010e8c.bin
35dc3a12018f1438a0df414cd6b7b7da92709c785e72c1f2fc6748c865f0f501
pdf-font-stream PDF embedded font (sfnt) at offset 0x10E8C 5152 bytes
font_01_sfnt_off00011ff3.bin
e2a0388e9adc13909304033972bc75d2cfbf793380c8c5290cc8e6062a7f010e
pdf-font-stream PDF embedded font (sfnt) at offset 0x11FF3 10980 bytes