Malicious PDF — malware analysis report

Static analysis result for SHA-256 9952a7c0711639db…

MALICIOUS

PDF

69.6 KB Created: 2020-12-31 09:02:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0deac1fa80c405fca5fd5ae99b1189f7 SHA-1: 98726aa78ef003917b47e33f245c9fb1c8ea583b SHA-256: 9952a7c0711639dbb777b55580bc61bccb7ac95b7cad9de6bf19678eb718ab01
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the presence of the malicious URL 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-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/strik?utm_term=christian+songs+about+unanswered+prayers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384464/normal_5fad5f44356fd.pdfIn PDF document text
    • https://miwidikanizi.weebly.com/uploads/1/3/4/0/134016908/pakiwopepudo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490123/normal_5fda6f24b6df7.pdfIn PDF document text
    • https://tuxotakej.weebly.com/uploads/1/3/4/5/134524070/tibusugotalor.pdfIn PDF document text
    • https://cdn.sqhk.co/vivutazawi/qhJYiib/super_bikes_2018.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380086/normal_5f8cb6593c30a.pdfIn PDF document text
    • https://cdn.sqhk.co/xilelawemu/qjhiaMP/29301922827.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374685/normal_5fb483226cfb9.pdfIn PDF document text
    • https://cdn.sqhk.co/sijoputolu/RYjzcC5/petroleum_engineering_schools_in_new_york.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/welanisowari/agnus_dei_piano_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/10350177828.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/league_of_legends_runes_guide_for_tryndamere.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_off0000d296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD296 5428 bytes
SHA-256: f5e54482f1a606bf33dccdb17db3be21cb5bd27c992da0b2593424419f1856e7
font_01_sfnt_off0000e50f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE50F 10672 bytes
SHA-256: 4da51fb5255b3b9bb3ebf7bf8184d26baa97fa4a1c821c14f04b5fced1b66245