Malicious PDF — malware analysis report

Static analysis result for SHA-256 9613c946d736bb5d…

MALICIOUS

PDF

77.7 KB Created: 2021-02-28 23:28:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 37498a8d9f64bf12706294d558981416 SHA-1: 6aa7cdb6a4c4fd84152f4fbd0599c081c8783717 SHA-256: 9613c946d736bb5dd1505ecaed7ffbb89200a7490ce3aa309264802b280703f4
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is highly indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support the malicious nature of the file. The document body, though heavily obfuscated, contains text related to winning the lottery, aligning with the external URI's theme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://nipisod.ru/strik?utm_term=how+to+instantly+win+the+lottery+in+bitlife PDF link annotation
    • http://zakajalan.iblogger.org/ap-_535_ordering_guide.pdfIn PDF document text
    • http://phtech.site/astor_piazzolla_oblivion_piano_sheet_music2vxns.pdfIn PDF document text
    • https://wefogazasu.weebly.com/uploads/1/3/4/8/134880183/dezanisuvin.pdfIn PDF document text
    • https://dupafubakatato.weebly.com/uploads/1/3/5/9/135961249/5405726.pdfIn PDF document text
    • http://cabinetsly.xyz/pokemon_journeys_episode_reviewxwkd6.pdfIn PDF document text
    • http://nowukusox.mypressonline.com/rotopuforova.pdfIn PDF document text
    • https://kivifakan.weebly.com/uploads/1/3/4/8/134870172/8a5987dcf11f82.pdfIn PDF document text
    • http://24goodstore.site/beluxuvixufava21ssc.pdfIn PDF document text
    • https://rifivubego.weebly.com/uploads/1/3/1/4/131407021/ef9f2a28ab8.pdfIn PDF document text
    • http://d2-club.ru/minecraft_beta_0._12._0_download04ghk.pdfIn PDF document text
    • https://dobivevoxopu.weebly.com/uploads/1/3/1/4/131453544/vugikilib_mejom_javetavijixalo_fuzapuwupakug.pdfIn PDF document text
    • https://jeluvuxibobuna.weebly.com/uploads/1/3/4/0/134017570/1734848.pdfIn PDF document text
    • https://fitoposibex.weebly.com/uploads/1/3/4/3/134364930/2b660e040158.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/jepinebawo/98665643231.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/jowazifapinobavimowurazi.pdfIn PDF document text
    • http://faletabud.epizy.com/1101987006.pdfIn PDF document text
    • http://rabatelekovufar.myartsonline.com/how_to_reset_low_toner_message_brother_mfc-7460dn.pdfIn PDF document text
    • http://vubelifijam.atwebpages.com/20006646513.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/addition_and_subtraction_worksheet_3rd_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/67977572584.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/como_llenar_una_ficha_bibliografica_de_un_libro.pdfIn PDF document text
    • http://pivotigapux.rf.gd/calories_in_boston_market_mashed_potatoes.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_off0000f20f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF20F 5148 bytes
SHA-256: 099347ed7fef374c10d059a7d6bbe65c204c0458da2666a6bf5473cd13ab72cd
font_01_sfnt_off0001039c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1039C 11128 bytes
SHA-256: 0af9a1557f45e0035c263d9f676ae908137e6ec86f15b6f89bb181bec00ea0cb

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