Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9c94856eab1d35b…

MALICIOUS

PDF

69.0 KB Created: 2021-02-22 02:20:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 972b5aea3c32787f457c9526fb392120 SHA-1: bf45917706c337359dc8cd4f917b2109977a3f5f SHA-256: b9c94856eab1d35b3a30742730ebac500a68a55b548362708ae84a7ac523a1af
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains an embedded URI pointing to 'https://bologen.ru/wix?keyword=jordan+the+lion', which is likely a phishing or malware distribution site. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of external URLs strongly suggests malicious intent.

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://bologen.ru/wix?keyword=jordan+the+lion PDF link annotation
    • http://edayafar.xyz/78171421167p4gpe.pdfIn PDF document text
    • http://mozodulo.iblogger.org/24396547792.pdfIn PDF document text
    • http://store50off.info/753575965652g20o.pdfIn PDF document text
    • http://gouliwer.online/formato_para_juicio_de_amparo_indirecto5eoff.pdfIn PDF document text
    • http://eushopvmn.site/gold_gym_xr45_exercise_chartmho2x.pdfIn PDF document text
    • http://affilateapp.online/lean_organisation_management_techniques_unit_2_assessment_answersc1qzr.pdfIn PDF document text
    • http://aduo5.online/73265923951zvnwb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://tulazupuvive.epizy.com/ayyappa_photos_wallpapers.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/97939774015.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/angolmois_genkou_kassenki_opening.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/bayern_munich_2012-_13_formation.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/tifumisaserojorenalixas.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/certificado_medico_de_defuncion_bolivia.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/38525757436.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/50241611043.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/minecraft_witchery_mod_1._12._2.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/26958680210.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/mujizokuxinumaxarinaf.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/durga_saptashati_lyrics_in_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/age_of_empires_2_online_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c61e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC61E 4512 bytes
SHA-256: 7ee7e931f49fbaccfc4fd9303b09119ac89dd75ea7bd38d38aecc52a9a16bb7f
font_01_sfnt_off0000d553.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD553 9988 bytes
SHA-256: 7d5b479563e2701f878aebd9d231f242177b48e6cf1e75603e2d5734c04a5627
font_02_sfnt_off0000f778.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF778 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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