Malicious PDF — malware analysis report

Static analysis result for SHA-256 4686682e37837202…

MALICIOUS

PDF

100.9 KB Created: 2021-03-24 18:47:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14ffb99ac43c206cece18cafb29f1850 SHA-1: 79c58dda7d4a7ab07f16a0a125b27d40c4ad5c9d SHA-256: 4686682e37837202b8d546b0b3fb02d37bbbe90ef9da7a3589def53be08c041b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. The document body, though partially garbled, suggests a lure related to 'Vestimentas de etnias del ecuador' to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://botokaw.ru/wix?keyword=vestimentas+de+etnias+del+ecuador
    • https://cdn-cms.f-static.net/uploads/4387061/normal_604e1a881a0f2.pdf
    • https://cdn.sqhk.co/rovujesox/cgdjdgc/kabiv.pdf
    • http://bawitog.iblogger.org/dagadixukufuz.pdf
    • https://cdn.sqhk.co/tumowara/QBGgeFP/woralapidaf.pdf
    • https://cdn.sqhk.co/gitogozune/4hbRI9m/download_map_of_toronto.pdf
    • https://static.s123-cdn-static.com/uploads/4417403/normal_6006b83135583.pdf
    • https://cdn.sqhk.co/jozojonujaj/a8hgogi/17279173664.pdf
    • http://jujovobima.getenjoyment.net/dovutines.pdf
    • https://cdn.sqhk.co/gejupajo/iitveja/download_zarchiver_pro_apkpure.pdf
    • https://static.s123-cdn-static.com/uploads/4370092/normal_60063b2399b96.pdf
    • https://cdn.sqhk.co/jagojixego/DUifjgp/ignou_bdp_solved_assignment_2018-_19_free.pdf
    • https://cdn.sqhk.co/jusulikipe/j7hjJ9z/baby_nursery_rhymes_video_download.pdf
    • https://cdn-cms.f-static.net/uploads/4463807/normal_5fd642fedd43a.pdf
    • https://cdn.sqhk.co/tijinujul/gQIidbu/mit_app_inventor_emulator_ios.pdf
    • https://cdn-cms.f-static.net/uploads/4501380/normal_6022600f6e0e4.pdf
    • https://cdn.sqhk.co/nivazesoj/iJgfLc7/deviation_reporting_procedure.pdf
    • http://zamowafa.mywebcommunity.org/97708811680.pdf
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/84721dc0-eed9-4e4f-b5de-4f251e20fa80/3909009792.pdf
    • https://uploads.strikinglycdn.com/files/a94c57dd-27b9-426b-bc82-8f194105da8d/55734038809.pdf
    • https://uploads.strikinglycdn.com/files/e6f42829-798c-4d5f-a488-00ee1dc280a0/what_is_ap_style_in_writing.pdf
    • https://uploads.strikinglycdn.com/files/f9cf2554-4be7-421d-9d4c-d81d75d91a44/periodic_table_blank_worksheet.pdf
    • http://nilijevenenox.epizy.com/seven_wonders_of_the_ancient_world_book.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001429e.bin
2e3af33663d03ec9a00a2230504bb9e8f98e67bd55fe1d0bcc4ef3f4c4b957b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1429E 1696 bytes
font_01_sfnt_off00014ac9.bin
2007cb8174af8e2a7236613c48fe1895e8a40d8d7436ee441821a5842abee2b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14AC9 5048 bytes
font_02_sfnt_off00015bdc.bin
c16c9b73179fb05496c495f9cdd3ca1c230bc33ec8576224fccd13db79762164		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15BDC 12792 bytes

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