Malicious PDF — malware analysis report

Static analysis result for SHA-256 15765e92bc142757…

MALICIOUS

PDF

67.5 KB Created: 2020-11-10 19:13:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 8587b0347bf403c8cc51c235eff4feae SHA-1: 8b7c732d2b53f5a97385f3e922a42217bf325d7b SHA-256: 15765e92bc142757630baa49ad2580abaaee6753c382f7736fed0e671909957a
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an embedded URL that appears to be part of a phishing lure, disguised as a search result. The presence of embedded URLs and the overall detection suggest the document is designed to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

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://trafficel.ru/aws?keyword=text+mail+subscriber+phone+meaning PDF link annotation
    • https://guboriratuji.weebly.com/uploads/1/3/4/2/134235556/xuneda-povifutotopubeg-ruzidan-kojipuvowoviro.pdfIn PDF document text
    • https://labivuzixifazer.weebly.com/uploads/1/3/4/3/134310915/45cf890303387.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387433/normal_5f8df8932d17c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373992/normal_5f88fa747ceed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485163/normal_5fa909ab4c581.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413987/normal_5f97994462260.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/12b87980-db22-4782-95f0-5b00bac93026/what_is_the_roblox_id_for_i_like_it_like_that.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c2a40e2-4bf2-4caf-a51d-fffaf9aacd0f/jutiwomujexi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/208a9655-27c9-4f6a-a32b-6471566ad419/faberumewelofifam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddbf7ddc-a4c7-4b5a-a393-90b38d8b169d/dusuzusowigagurimerufivod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fedf4ff8-a798-4116-ad7e-3d98a6c35591/fixitezoxas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f00d6bd-de56-432e-be2b-cde569af5ce6/81533537596.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_off0000be71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE71 5388 bytes
SHA-256: ed4fb36eb8ca8cfe4c88ea30375faca55835677a3d26c69076cb18c2bf9480ff
font_01_sfnt_off0000d08e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD08E 10140 bytes
SHA-256: 182e59336c7428a6fa4a74ffe49f838e3b63960db085a8ccfe7284d30d8e7923
font_02_sfnt_off0000f340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF340 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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