Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfe9256d2f3c8655…

MALICIOUS

PDF

103.7 KB Created: 2021-06-01 07:13:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 4ca1283a3ad162e3bcbc54743192c804 SHA-1: 45d353ccb6f481c166a70dd78c43c311348fe526 SHA-256: dfe9256d2f3c86559e35fae1c39ebdca1dc7d14200e55a16d3f112cd2800048d
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 0.9989

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://druttle.ru/123?utm_term=cabal+divine+upgrade+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4408875/normal_5ff8631c60857.pdfIn PDF document text
    • https://ruzudewalaxuge.weebly.com/uploads/1/3/4/4/134497745/defati.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419650/normal_5fcf6bc085c98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473637/normal_60214fa79e937.pdfIn PDF document text
    • https://koreperuk.weebly.com/uploads/1/3/2/6/132680900/1223236.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412378/normal_5fcacaa54949d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449185/normal_604e77c57d9ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445115/normal_5fd7db891d2d4.pdfIn PDF document text
    • https://dizasufe.weebly.com/uploads/1/3/4/6/134680143/kelikuw_duxedepuv_dixapewinufiju.pdfIn PDF document text
    • https://besivopu.weebly.com/uploads/1/3/4/7/134705308/12224.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461498/normal_606572ec4a8a6.pdfIn PDF document text
    • https://veretiwuwe.weebly.com/uploads/1/3/1/4/131406621/1941411.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407576/normal_5fcd816ad93c2.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://paderukut.pbworks.com/w/file/fetch/144433926/white_rodgers_thermostat_1f86-344_troubleshooting.pdfIn PDF document text
    • http://mapijakemifo.pbworks.com/f/wejulirerini.pdfIn PDF document text
    • http://kufujibumufa.pbworks.com/f/vogelhaus_blockhaus_bauanleitung_kostenlos.pdfIn PDF document text
    • http://wojipag.pbworks.com/w/file/fetch/144420273/pigenobewodoxozeno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a49cd38-a972-4320-953d-792a9ef1318c/ar_15_scope.pdfIn PDF document text
    • http://wuvebag.pbworks.com/w/file/fetch/144428604/modern_biology_textbook_standardized_test_preparation_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7329a5f7-c23c-4c51-aaf5-7d0e3571c9af/zukisavekafeb.pdfIn PDF document text
    • http://mibegenav.pbworks.com/w/file/fetch/144441165/temubuzutamovetabijoxitav.pdfIn PDF document text
    • http://paderukut.pbworks.com/f/denijugodorurakil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/480776c9-1dbd-4542-98da-2e1f5ec5fa30/metodo_de_hunter_para_instalaciones_sanitarias.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00013eea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x13EEA 15344 bytes
SHA-256: db5340b89b13c9e27e5fa12d604a43be40033add76f3a91201386f1a32f9105b
font_00_sfnt_off00012db8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DB8 5052 bytes
SHA-256: 3edd862d9f4f561f34d5623f50d838439126c2d631bb32d69a1eedcf43fb4cbd
font_02_sfnt_off00016948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16948 11056 bytes
SHA-256: acc318d2ff67c2736f176fa5e6f31ca9a3d0835678eec0a3df3ca55b6b8a09fe

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