Malicious PDF — malware analysis report

Static analysis result for SHA-256 372d961fdfc98661…

MALICIOUS

PDF

78.0 KB Created: 2021-04-02 22:01:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 34c929e4ddc4759d55808865ed57d564 SHA-1: 8bb456d84069f24243301042d3645850d668f198 SHA-256: 372d961fdfc986611dfcdae1667486d80114ae622f086d40591c73125e4b49d1
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified as a phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to financial awareness, likely to direct users to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://midufefew.ru/123?utm_term=financial+awareness+book+pdf PDF link annotation
    • http://saroforati.medianewsonline.com/80222747048.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367645/normal_6066f51fc4b16.pdfIn PDF document text
    • http://rejamar.sportsontheweb.net/wobezizuvefokijuguxuvoge.pdfIn PDF document text
    • https://cdn.sqhk.co/xevowuto/iMAwjfp/36787246895.pdfIn PDF document text
    • http://somixewavado.sportsontheweb.net/cuales_son_los_sintomas_de_contracciones.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385217/normal_5fd679de5bd26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450427/normal_602d551ded75c.pdfIn PDF document text
    • https://cdn.sqhk.co/kisasizaro/cSP97Sn/digigorodasisipunasudo.pdfIn PDF document text
    • https://cdn.sqhk.co/luwibajik/2icjijd/29807603613.pdfIn PDF document text
    • https://cdn.sqhk.co/sekopanosesu/jfhhtJ0/15739831158.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_601e8f28a0521.pdfIn PDF document text
    • https://cdn.sqhk.co/xogudililavo/ifwrjcP/relax_river_vr.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/navoburarovada/maniac_2012_full_movie_free.pdfIn PDF document text
    • http://bojepudadadax.atwebpages.com/pejanomamifojesov.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/mejurinijuwubagemas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/936b1211-5a2c-446f-8a61-ec3158bc072d/87548778712.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/faab7b5d-f6cc-4a70-8e0d-4b47ad091dc1/bonudimidawomep.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/kemazat.pdfIn PDF document text
    • http://satovimowenijor.myartsonline.com/jefefumivig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/707efcd5-3938-413e-8e58-cab81ec46193/mobenezonov.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/ap_physics_formula_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/20845528024.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_off0000f26e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF26E 5400 bytes
SHA-256: 201e923201521e24522025c1859b8a5a33a056cbf4768d3d3387f66f4ef36697
font_01_sfnt_off000104ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104EC 11068 bytes
SHA-256: 0bd0427157d9ce536c57e4c8fc158f47b172f1b79dbdce59d641675f7a742c8e

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