Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b0dbeee41d31860…

MALICIOUS

PDF

91.1 KB Created: 2021-06-07 14:26:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 112bf197bfc0be3022c59ba4909f6cc7 SHA-1: ecb793ecc682204bc21861dd3c1c9cb8c69ff740 SHA-256: 7b0dbeee41d318606f971d60dcf69ade7f401e9f44ca0887b9dd7896d07f1550
104 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 presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://seumenha.ru/123?utm_term=swahili+worship+songs++mdundo PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4393483/normal_5ff41a4577f85.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368956/normal_5fe5b2b8a51a6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384026/normal_5fe2b3e89e54f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420752/normal_5fce4cd3f2df7.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4370072/normal_60b706ba78a55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405641/normal_605329dc2143f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491723/normal_601bd17b43e95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413457/normal_602f6e40682e6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366389/normal_5ffb5dda14396.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465136/normal_5fc5804d59cd7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428043/normal_600924960e39b.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/18461980-dc6c-4a04-8c48-8311b5781a84/40350432086.pdfIn PDF document text
    • http://xujefix.pbworks.com/f/34892797229.pdfIn PDF document text
    • http://nagomax.pbworks.com/w/file/fetch/144423423/dapinivobububovu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5ed2fee-7597-42d2-a5f6-7bce5893bca4/65072924791.pdfIn PDF document text
    • http://lokifasowaso.pbworks.com/f/36392502272.pdfIn PDF document text
    • http://wixugigir.pbworks.com/w/file/fetch/144458676/regixi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90af51bb-d9e7-481b-966b-e620e2db858f/jojawisomomenu.pdfIn PDF document text
    • http://nugurafuge.pbworks.com/w/file/fetch/144521022/descending_palatine_artery_trauma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/535abc30-000e-4efe-8e2d-08238a6c9db0/wavanitaxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f85234c3-9f33-4332-b484-e6d8d4809bd1/pentair_superflo_variable_speed_pump_manual.pdfIn PDF document text
    • http://zopujoxobug.pbworks.com/f/22610327837.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB9 5568 bytes
SHA-256: 5442ed3cafcecaf45d182fcc3f5597d7d2b33d09aa616b99f8173c690d68d592
font_01_sfnt_off00010d82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D82 4092 bytes
SHA-256: dbea3f349d94621014a46f42135b263d243a9bad26addee212067310362da5cb
font_02_sfnt_off00011d4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D4D 12036 bytes
SHA-256: 28ac3ebf06ae63c253b2fa579fde28efd642182bbd2c624dc4f74a97454ed371
font_03_sfnt_off000146bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146BB 16872 bytes
SHA-256: b95d2759e5d6d44e7276558ff10b3ad12da83ac5e5687a0719184084d68dc795

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