Malicious PDF — malware analysis report

Static analysis result for SHA-256 96fd269e64bdb14b…

MALICIOUS

PDF

130.0 KB Created: 2020-11-11 15:55:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1e37f5de504eb269b64847f1a854a6b8 SHA-1: dcb8f1b1cac45d481b11c7493ce3ebbfe441217b SHA-256: 96fd269e64bdb14b0fe088ced37557c910d5446ebc1b433cf18b9b10f53ff025
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 0.9997

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://trafficel.ru/123?utm_term=fraction+problems+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373797/normal_5f8b442005804.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379719/normal_5f8b039c991c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420906/normal_5fa46ac7913fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370270/normal_5f92c1994c6cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369174/normal_5f94c22779405.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376606/normal_5f90524cd47b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379719/normal_5f939057dc9d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427267/normal_5fa4ac294af93.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/2a008817-7761-4691-bcf8-c17f9951cf0c/mets_wallpaper_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8288269-726c-42f6-9753-da391d36995c/dudosaruxelidusevik.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/padoburukixolew.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/wamif.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/famela.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c25c1b2e-f134-4f81-9123-49d862a11076/bewipudatamofox.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_off0001c156.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C156 5424 bytes
SHA-256: ab41fe156b68ed62e0c4bb149542dfa4a8358cab81b2d115dee85a238473d20c
font_01_sfnt_off0001d3a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D3A9 12196 bytes
SHA-256: c777c2f515af1a2d493ab7924958385081f5932787bf03559b2ea8192693de1f

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