Malicious PDF — malware analysis report

Static analysis result for SHA-256 1353de8f948cfce4…

MALICIOUS

PDF

80.3 KB Created: 2021-01-06 07:53:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: aecfbffbb11b1d5f88d801a8a370b4aa SHA-1: b002ce415c60a4411ca9ba01d16f545add6bb959 SHA-256: 1353de8f948cfce4075bca324bb4e67c24fd9c02932e454b7577c110ca9e9768
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://traffking.ru/aws?utm_term=duchess+of+malfi+paraphrase+pdf PDF link annotation
    • https://cdn.sqhk.co/dajebala/IihR628/jowevamet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416512/normal_5f9ed67fa98d8.pdfIn PDF document text
    • https://cdn.sqhk.co/wejupexuput/Phejcge/minecraft_cave_update_download_mobile.pdfIn PDF document text
    • https://cdn.sqhk.co/modajili/L5oCibc/25892705839.pdfIn PDF document text
    • https://cdn.sqhk.co/jedelamodafa/L8y1ibA/66593266072.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427086/normal_5fef49afdc970.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutorixo/ligzWhe/57300687413.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373509/normal_5fe2afc8ab2c6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425255/normal_5ff42c97e2503.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491933/normal_5fe97c5c9fbe4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382429/normal_5fc7610f6bc8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484815/normal_5fb69e460c46b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/e5191208-a0be-44af-a861-4dafe476100f/all_in_one_stickers_for_whatsapp.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc796454-b612-4099-8367-4b396e717bf6/68737514512.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE3 5088 bytes
SHA-256: 2e92b76a55eb494d0a6db9f3cc98d335267e70524199b2b63753108933f769db
font_01_sfnt_off00010133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10133 11516 bytes
SHA-256: 90ec568b0bda2e533e03abaf94345a0b9d5a9ca754ee795fcf20680d1f50cb6d
font_02_sfnt_off00012654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12654 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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