Malicious PDF — malware analysis report

Static analysis result for SHA-256 596a475e53b8edbc…

MALICIOUS

PDF

80.7 KB Created: 2020-11-26 02:59:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0949b3a4a0eaa9fb9fc42639b7ddc5ce SHA-1: 953c8380e6115682934ef3604537ab11c38c498c SHA-256: 596a475e53b8edbc557298579b6267b6fde94eec7665c81ba10d292e4d46515b
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is a PDF with a high ML classification score and a ClamAV detection indicating it is a phishing trojan. It contains an embedded URL that points to a suspicious domain, likely intended to trick the user into downloading malware. The presence of a 'download button' heuristic further supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/123?utm_term=apk+mania+gta+san+andreas PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387406/normal_5f915bf703e03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374362/normal_5f92572f20ae3.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/96b9e2eb-532a-4fd2-bffb-677ab0d34776/nebeziza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa13553b-c4ce-40c6-b918-d72045d3ccf3/40089188957.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b061854-097a-4f28-b8c3-a441eacb96e6/ap_microeconomics_unit_1_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bedb1b67-6c4a-42ad-abf3-1407994e5da0/88198223613.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bacbf823-6f59-48bd-8510-51e4e3cf932f/bopiwusedetigukisuvoxem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62495ef1-4994-4fc1-8baa-d19078339280/24988939673.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba2620d7-ef8d-48d6-96f5-b1e0149af609/lesco_hps_chariot_parts_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2f8a470-4486-460d-a03e-226e6da0ffec/26798999891.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f733d50-be94-47f7-8f38-73ad1fd8ae82/95695981346.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35877e35-96a0-4ce8-bad6-a2ada073d9e2/mind_gym_book_report.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF5 4976 bytes
SHA-256: 5b45da981f79523bc9d2916ab6d6893780b81881465b691e72e7ef3edc5ccafe
font_01_sfnt_off0000eeb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB4 10588 bytes
SHA-256: cb046577b6b0ca106a0ca5f82ab6c17c874f0fff5d20fa187eab709a6000d759
font_02_sfnt_off000112b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112B2 16092 bytes
SHA-256: 39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67
font_03_sfnt_off00012779.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12779 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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