Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec417917515c3e9b…

MALICIOUS

PDF

71.1 KB Created: 2020-12-15 10:42:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: c58474d17d7363914a9a6ea59664be9d SHA-1: e9537a3b53780ca0b9b6b8ec544c62626a0b3df4 SHA-256: ec417917515c3e9b63beb640b5f0b21dcd92987763c9c1007bb01a568d972a1c
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, trafffi.ru, which is likely used for phishing or malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

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://trafffi.ru/123?utm_term=years+old+lyrics PDF link annotation
    • https://vejuvofarazaxar.weebly.com/uploads/1/3/4/3/134355137/nijadebapedeme-xinibusexenoj-tesowunukerizob.pdfIn PDF document text
    • https://gulesome.weebly.com/uploads/1/3/4/4/134496781/rawota_kozoripavawo_bonuxedaliboxu.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/9fa7699.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387219/normal_5f8cf47f9f861.pdfIn PDF document text
    • https://wudonazig.weebly.com/uploads/1/3/4/6/134675044/138255.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/a92e0434-002a-462e-a2b3-00bd390e2708/91683200197.pdfIn PDF document text
    • https://s3.amazonaws.com/jaburirarov/chess_apk_for_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/hbse_open_12th_form_date.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/lawebonozakotufisa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcde7d63b4ad40d4a7e202e/t/5fd0b11575f5e50485777592/1607512341864/fall_games_battle_royale_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/fan_cart_physics_gizmo_assessment_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/67860390991.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/baxatadi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffa571c8c7413142c9acf/t/5fc0e385fa04221c71406c53/1606476679259/shark_pro_steam_pocket_mop.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/24440716298.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d527c37-380b-4286-9918-a8658fc18f78/libro_quiubole_descargar_gratis.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_off0000db22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB22 4996 bytes
SHA-256: 7204d892e7d3960832af7e996c4b9ea06da619488d8b791f68c73253efe8141e
font_01_sfnt_off0000ec35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC35 10548 bytes
SHA-256: 61dfb5c596fa92d53f22533456adb606edbacf3d0f9ab7c44a9544f5bd01b3f1

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