Malicious PDF — malware analysis report

Static analysis result for SHA-256 a63701950f8d6049…

MALICIOUS

PDF

67.9 KB Created: 2020-12-23 12:57:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 3fec4791f7b46026ad05cb3baf3fed38 SHA-1: cc200728e6ac67e4a8736a2e741ca265009ed604 SHA-256: a63701950f8d60494e699ec9fe6a7fbec1a7fc26452b513fdc06aa484cf43f84
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'traffnew.ru', which is highly suspicious. The document body, though heavily obfuscated, suggests a lure related to a business guide, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffnew.ru/strik?utm_term=grant+cardone+closers+survival+guide+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4529977/normal_5fdc0f65ea4cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404738/normal_5fa5a48dcf446.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/b9a99f47-9381-4a13-b34e-ec8a2c7fbbcd/small_great_things_jodi_picoult.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2ce7fd7-5325-4e60-80b5-7c9a7138ea58/tapigifakexoravodap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e762fb99-13ec-424f-93e8-c39d32bc2298/23396342870.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/vamumuw.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/99875509331.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/google_drive_apk_android.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/chevrolet_optra_2007_manual_de_usuario.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7d51fcb-6f27-48c2-b2cd-ec3fc256871c/33041682297.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/90956818910.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1d201c4-50fa-4cad-8110-f218979d7337/xikomerebogovezakagolaxul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/daff46bb-a951-4ddf-8518-2174a423d795/fatezu.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/xusamuzaweg.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/burp_certificate_unknown_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3e3f8c3-ad75-4763-847c-f1a4e4292bab/39581244232.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_off0000bdf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDF5 5296 bytes
SHA-256: 78f0e660503213f3fe25741d28d7086d535c49175a0abc36ccce8ce2f4e98f27
font_01_sfnt_off0000d011.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD011 10916 bytes
SHA-256: 3588859f86f3b813dde889bc0e19a11cf6327b13b9b67845065f584c75b1c81b
font_02_sfnt_off0000f469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF469 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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