Malicious PDF — malware analysis report

Static analysis result for SHA-256 56eb6652c6ea6f2a…

MALICIOUS

PDF

81.7 KB Created: 2021-04-07 02:00:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 7605543276fd6d974483efa2fb435584 SHA-1: e7b38d0b138d1580e36022731e6f2cffd09ec3be SHA-256: 56eb6652c6ea6f2ade9960e1e251a6bcbb13277f0397c1637e63a92b4387bcf5
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. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/strik?utm_term=how+much+do+graphic+designers+charge+for+a+logo+design PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409621/normal_600e05db6f66b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410462/normal_60134ef87044f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384825/normal_5feb225a47aff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389809/normal_5fe55038587cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475571/normal_5fd37ac638217.pdfIn PDF document text
    • http://mscredit.info/csw_study_guidedbhhj.pdfIn PDF document text
    • http://daravto18.ru/go_tell_it_on_the_mountain_book_summary5j245.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490724/normal_5fdc8bf667ac0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415929/normal_6005b48acbe40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366676/normal_600c6f8f6aaff.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/51263c15-3d96-40ab-9458-fdcaa2e4d457/vevili.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce6d2582-3857-41e8-933b-b231faf22356/putevakosizegu.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/realtek_bluetooth_driver_for_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9263751-2d68-4827-997b-72430c824b13/vedoropemazetata.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d1fa289-75f7-4525-91ce-93aab3367663/24499812050.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e822a55-1c13-46c1-a06b-4b3b3df95da5/98949730227.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/levanej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45ff0048-3d04-41d5-8b4b-0a005aa19e59/deepak_chopra_21_day_meditation_day_14.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c643079-1330-4f7a-a816-6890e37e6af5/how_to_add_directv_to_firestick.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4238ee45-e88e-4c00-bd18-3d45228f92b9/58239787096.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_off00010060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10060 5624 bytes
SHA-256: fefc1174be0cf962fd0acf580f8d52c3a3e43a27165121fb084422b4dfefe427
font_01_sfnt_off00011366.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11366 11012 bytes
SHA-256: 03f23f9e280dcf0c2433e8bfc61b43419fb2bf9424fff3b6961ecc74f6acc153

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