Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fc1839997fbe4c6…

MALICIOUS

PDF

154.8 KB Created: 2020-11-14 09:48:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0dc6eb00a7930312d0d8b0e1bd1b4319 SHA-1: 97fadc321de86ab2fb91b0e4b57bb252c2cc5381 SHA-256: 3fc1839997fbe4c66d180963250053b2b8de04f417f2420abefcdabf814669d3
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site for further exploitation. The document body, though heavily obfuscated, references 'Scp 069 vs scp 682', suggesting a lure to entice users to click the malicious link.

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://trafffe.ru/123?utm_term=scp+069+vs+scp+682 PDF link annotation
    • https://defonufagij.weebly.com/uploads/1/3/4/3/134360363/2576410.pdfIn PDF document text
    • https://tukibasitotaz.weebly.com/uploads/1/3/4/4/134445351/5e398b1.pdfIn PDF document text
    • https://tibiwurab.weebly.com/uploads/1/3/2/6/132695994/7371f1.pdfIn PDF document text
    • https://nasijominazol.weebly.com/uploads/1/3/4/3/134366940/zuxivake.pdfIn PDF document text
    • https://zuzagidebosoxe.weebly.com/uploads/1/3/4/3/134391670/dulorare_kekisov.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jaloto/goveseg.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/lainitas_planeaciones_2019_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c91167c7-285a-4a42-b028-b1ada332ac01/24243521426.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbdefe8b-629f-4ab1-b572-e21c363afd2f/70219168516.pdfIn PDF document text
    • https://s3.amazonaws.com/pezufatexo/19821540799.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/bsc_nursing_entrance_exam_model_question_papers_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00421668-bc6e-4dda-b58d-8daff24041ee/sapaxut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31822bf8-c21f-426f-94d7-a0ff8c80ff18/gutofabulif.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_off0002236c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2236C 5528 bytes
SHA-256: 6f1c1b5a715f0c138c0e14af93ff6a6642b4d5d4cfd006362782ab6ce97a64df
font_01_sfnt_off00023658.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23658 11748 bytes
SHA-256: d3472c9a939f50a7ebdfc633016ce897f93c969bbe87d04395a6ab24542f81fd