Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fad8250784530bc…

MALICIOUS

PDF

70.2 KB Created: 2020-12-21 18:04:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b611e04c4603ca65066fd327f8b6e02b SHA-1: 9b2dcdca26965a89eecfc65e9f506da44fe8023b SHA-256: 3fad8250784530bc9c20404f82a0b86cf8d664d8d167678ede6b1cb9fe9ac5b4
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 detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a domain associated with phishing and malware distribution, suggesting the document is a lure to download potentially harmful software. No scripts were extracted, but the presence of an external URI and the overall detection profile strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=goat+simulator+game+download+pc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4389801/normal_5f9c9e4a5b626.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407084/normal_5fd74c910f586.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366654/normal_5f9449f84c3b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415527/normal_5fad2e3e594a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380869/normal_5fadbc218d3a9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf54039b1ed03538d1da8f/1606374406224/great_northern_war_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67ff1122-bb31-48b4-aa5d-1bfd96f187a6/43238292652.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc2373ca-be3a-4676-bdbd-1a80c77170bb/zimuwexuwug.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e155104edf1d7780ac3e/t/5fc22e713f75b166431d37f9/1606561396545/muvebexumazoribi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc53be8ab79f442f245f56c/t/5fcf57eb8b174454e99d9817/1607423980341/xuduwidakadoxavenafarege.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28223e02-c49e-4ec1-95ce-042f1b3cc818/iglesia_de_efeso_su_historia.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51f70f7cf8c7540462545/t/5fc6f9f356cd4459b3ac6be1/1606875637760/earn_to_die_2012_part_2_poki.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/36182098923.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84d26ca3-a205-4396-b6b7-34fde097e3bd/buzebamexisebuxofuwona.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_off0000d5a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5A9 5516 bytes
SHA-256: 05b6bbe1367825cff9b5072ca1962afddee4b6ef49d8cfff2138b04d6d928c8c
font_01_sfnt_off0000e867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE867 10492 bytes
SHA-256: 23fa3791d96d33839ff79c17a00687c80bd7c8d5d12a500bb88bbee720d16465

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