Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf209ff8eaa6ba19…

MALICIOUS

PDF

78.0 KB Created: 2021-05-31 05:11:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: eae16b1a1d277bf68647bf1ed60e502a SHA-1: b02d20160ed71399bd0e53071fb32a26dc6df7f0 SHA-256: cf209ff8eaa6ba19777a2aaa940813efdfbe02e62e87dc34fa811164ff977be7
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 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/strik?utm_term=foxit+phantompdf+business+full+2019 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4444626/normal_5fcb5f6c1d43a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373511/normal_602c71f00b23f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408701/normal_5fe8ffac2ef48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408319/normal_601c6f8c6efd7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450732/normal_5fffd417baa89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470223/normal_605324778d166.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377114/normal_5fcb514e507d9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465938/normal_5fcceaa38baf9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427093/normal_5fdd340d781c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367961/normal_601ae2ad40405.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4462688/normal_60affc77ca9b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478137/normal_5ffa3cbb73fd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416786/normal_6023a4ae4c65e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449419/normal_6018f898a14c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453328/normal_5fdb196ca5166.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/f03123e8-cf3b-451c-8b22-49bff5398a5a/how_to_play_fur_elise_notes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02c40db7-e5dc-44de-9d62-869aa75b7071/jovoduzerarerukafa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b7a6685-6057-4f79-8f18-ecb110634d6d/uk_police_ranks_military_equivalent.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22141cab-fc8a-4ccd-b34c-84e4f6d1d6c2/wejoritigalagejidomabibo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb3e7599-cf74-42a5-aa40-e122a0fab320/dikifarimigisike.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c897cd83-2f89-4540-8cf1-db2221f22706/geroxedoni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17f1274d-096f-4cc0-b2a9-e40770b9292d/the_berkeley_review_mcat_books_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/914967b5-e3f7-4b9a-a42a-7890cc0adfb7/bigibubutibesububagim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e6acb1a-48ab-4dd0-8e85-8014f0c23746/fuxufobewemukevabivit.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_off0000f07d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF07D 5832 bytes
SHA-256: 75849723d0f467db0211ea74238f10a5942f22a42fa9e3f88ff0d2d9ce3001be
font_01_sfnt_off00010433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10433 10600 bytes
SHA-256: b7af341aef3b54420b8daf8b033d5f2b220f4c7c49b04cf1be7ffb7cd4bceb89

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