Malicious PDF — malware analysis report

Static analysis result for SHA-256 8743e35323e17ed4…

MALICIOUS

PDF

95.3 KB Created: 2020-11-09 22:31:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 33f5d08620e797d51b479cc8c69cf06d SHA-1: 97bbb471517e97018e09f9ece5de797b670183af SHA-256: 8743e35323e17ed4daeb064752b2b37bea6f12e87e830cb8cb40cd199a22285e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffset.ru/aws?keyword=classic+wow+holy+priest+bis+list PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366645/normal_5f9ca35713397.pdfIn PDF document text
    • https://ratomewupevo.weebly.com/uploads/1/3/4/2/134234569/7673475.pdfIn PDF document text
    • https://segedexulitino.weebly.com/uploads/1/3/4/6/134612069/wosivojozovi_dasokixul_tajez_tatedapefus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393489/normal_5fa08a8d99780.pdfIn PDF document text
    • https://difomojixi.weebly.com/uploads/1/3/4/3/134319012/puvusorigabojapuwire.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376875/normal_5f8edab9b8def.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405409/normal_5f95d76bbe27e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370791/normal_5f8a91c85c9e5.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
    • https://uploads.strikinglycdn.com/files/8ba572b2-5e50-47d4-93a1-0fb49cee4ac7/18936002075.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e30e68d-3e88-4fc9-b85a-cca96046e2f1/new_years_eve_bloomington_il.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e2843e3-5a3f-4e9f-a9d9-774a6d739fb1/vebumumi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bd148b4-04fd-4e95-9718-13cbea25055e/gaming_mouse_pointers_download.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000112af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112AF 5060 bytes
SHA-256: f2ff44786025730ec6d18b5da1d5f3d9585765d2354027fa5ed47382c31d7215
font_01_sfnt_off00012409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12409 11468 bytes
SHA-256: f51f23cd7a6599b173aaa33c57733eff50037c9bb8650495c0e34cf0b152ba1f
font_02_sfnt_off00014b52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B52 16544 bytes
SHA-256: 4354bd37e85197a997b2f6c8c8698034d2711068b41d1b66819094364c364bcc
font_03_sfnt_off00016196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16196 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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