Malicious PDF — malware analysis report

Static analysis result for SHA-256 415297588dd6b2ee…

MALICIOUS

PDF

80.0 KB Created: 2020-12-06 10:57:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2bd938437a722c77d66c6931ebdad1d0 SHA-1: e0f0aaf58381e1cb3b246472a6ad09b0f1c2f5aa SHA-256: 415297588dd6b2eef18d3f4e4c224888d1ec456d6e16bfc8b82bab75e0432c7d
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 a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, traffking.ru, which is likely part of a phishing or credential harvesting scheme. The document body, though heavily obfuscated, suggests a business or legal context, which is a common lure for phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffking.ru/aws?utm_term=formalit%25C3%25A9s+post+cession+fonds+de+commerce PDF link annotation
    • 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/0fbe0022-658d-4104-b130-8f1c71da6cc6/ejercicios_de_acentos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b13bc4ef-3ca0-45e0-b73d-bdef4d1c29a2/organizacion_social_de_la_civilizaci.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0bb2c88c99b6d37a6398e/t/5fc155e73570fb44d1348124/1606505961303/10990943993.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94946688-f1ba-4756-a06f-8392d6b280d3/vemafuxifijezikujub.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe24184e98326c02d94475/1606296601178/9603906427.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09b50cea-e42f-4cc6-ab82-54eef58cc4b1/57056310751.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf494a08845d0924806dc1/1606371659075/mazedigalazapo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd11625dd8cf232ed09315/1606226275018/26245365511.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/75907424919.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/les_pays_du_monde_et_leurs_capitales_par_continent.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/ancient_rome_study_guide_answers.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_off0000ecce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECCE 5188 bytes
SHA-256: 831646e9a8ce1ee50ab3c04aaa23ee8985adb4423c5bcdf4e26e96ac2eb3cd95
font_01_sfnt_off0000fe09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE09 11760 bytes
SHA-256: d3b06df01885f450e86fe252767e27acaaec22edd1a830a360e626a577b6de14
font_02_sfnt_off0001229e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1229E 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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