Malicious PDF — malware analysis report

Static analysis result for SHA-256 f52476411bb8e76a…

MALICIOUS

PDF

71.4 KB Created: 2020-12-26 12:55:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: dd9071f8e272f3d9e3c6c871fb3bf3d2 SHA-1: 346560e156784d46ad9e26f11fe70f3790c29b22 SHA-256: f52476411bb8e76a9ce15a29bb925bb86f9caacc1d33515d4da2124783daa5ec
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, appears to contain text related to 'Business network international singapore', suggesting a phishing or social engineering lure. The embedded URI is likely intended to redirect the user to a malicious site for further exploitation.

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://traffset.ru/strik?utm_term=business+network+international+singapore PDF link annotation
    • https://cdn.sqhk.co/kufejeni/qiagc8Q/56217882240.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/pevuwarobuvowa/57942787007.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/6058975723.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/likasagu.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/flower_math_worksheets_for_preschoolers.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/shalimar_paints_product_data_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/089b316e-1203-4ac2-9c98-0145ea5116b7/tour_guide_jobs_washington_dc.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/misotuzixubawe.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/idle_poring_mvp_skill_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/95578066526.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/12628696623.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8683e316-4920-46e3-a3e8-3f8ccc4cf468/una_temporada_en_el_infierno_fragmento.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_off0000d7ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7BA 5192 bytes
SHA-256: 683d91f984ff4c17b52ec6d41c71563bee7173d7f34d36ff99940a8a3dfbe9bb
font_01_sfnt_off0000e991.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE991 11304 bytes
SHA-256: 312c791e25b29b60bb1142e669a01a8b3c37a1015800e7e2320883b37172ce39