Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f4b6705ddb797f5…

MALICIOUS

PDF

66.4 KB Created: 2020-12-01 21:21:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 132670200d2777e7f23abc8514506fd8 SHA-1: 165e62d73e65c411a556f0b88252a5566d31b637 SHA-256: 0f4b6705ddb797f5c7b6ac71dd35e838bb93cf395e103b4d96d9a5e84378090f
96 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an embedded URL pointing to 'trafficel.ru', which is likely used to deliver a malicious payload or facilitate a phishing attack. The presence of PDF-specific heuristics suggests exploitation of PDF vulnerabilities or malicious content within the document structure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=d%2526d+5e+shadow+dragon PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4415527/normal_5faf7a61a2de7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/69a22d42-e755-4ea7-974b-2053ee2c36b8/fobekozami.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc066bd9955c744b5390948/t/5fc10856cb3e0f5771740366/1606486103562/mannequin_full_movie.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c9b1a5bc066edfa528b7/t/5fc59e059d793648404f14a0/1606786566419/11376329572.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/weapons_mods_for_minecraft_1.6.4.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/ishq_chunariya_song.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/az_cardinals_schedule_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/67152733835.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/template_class_assignment_operator_c.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/august_monthly_calendar.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/64978193451.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9038ca16-5844-495b-9840-20716cb994aa/lots_more_settlers_and_enemies.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/64863584920.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_off0000c831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC831 4156 bytes
SHA-256: 3c306e0ec94285d13e87c04bb9d91e20e74eae243bb960c666b01ded030faf74
font_01_sfnt_off0000d65e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD65E 11372 bytes
SHA-256: ac7a2254b49a45ecc48fcc5cb4e41d6d0145f16b26397263c555861d46ca666e

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