Malicious PDF — malware analysis report

Static analysis result for SHA-256 5de90b164c883c2b…

MALICIOUS

PDF

77.5 KB Created: 2021-05-16 19:40:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: affb24b0da70d82249b344e0ecebf35f SHA-1: 63d1f9973ef9fcd1874591f59cabd4b6b1085879 SHA-256: 5de90b164c883c2b2add6347f46dbbbae6ef851507e785e15ad07b0323ac0aa1
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be related to search result content, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://ponafet.ru/strik?utm_term=husqvarna+445+carb+adjustment+tool
    • http://allwoman.site/xufelaranudezilesog894i.pdf
    • http://parkji5x.xyz/jemusaloluzuxejaloqmb4.pdf
    • http://bigno.space/moweberezhf12c.pdf
    • http://supermagazforsale1.xyz/todezerenemivijixiroxu9nxq.pdf
    • http://vienvozvrat.site/wine_bottle_labels_template_vectoree783.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/povodijirig/navy_evaluation_instruction.pdf
    • https://uploads.strikinglycdn.com/files/4c6bde2f-a5be-4d75-91a6-2e56a2a803a7/751171010.pdf
    • https://s3.amazonaws.com/ximupuv/cppib_2007_annual_report.pdf
    • https://s3.amazonaws.com/sakaburepagase/organic_chemistry_reactions_flow_chart.pdf
    • https://s3.amazonaws.com/zukogi/leonardo_da_vinci_reading_comprehension_worksheet.pdf
    • https://s3.amazonaws.com/rilexazejuzovep/51623718118.pdf
    • https://uploads.strikinglycdn.com/files/d3c863cb-54d1-4b56-98bd-d96e56c696ff/2957900089.pdf
    • https://uploads.strikinglycdn.com/files/e3ecb9be-21f4-4bff-af5d-2c26b00aa23f/97317032496.pdf
    • https://s3.amazonaws.com/davolazupivowi/vanidoporozakitiz.pdf
    • https://uploads.strikinglycdn.com/files/dcd8d57a-e642-49e7-a23b-867ab738df23/90082710893.pdf
    • https://uploads.strikinglycdn.com/files/359d4643-e1d6-4e59-8f6d-4afb9d673a08/wapilewokobod.pdf
    • https://s3.amazonaws.com/zuwosil/xajivuregexurunuxarojap.pdf
    • https://uploads.strikinglycdn.com/files/f556164f-cbdb-4292-81a3-52c72179daf2/garbh_sanskar_book_marathi_free.pdf
    • https://s3.amazonaws.com/bokofapig/89705699889.pdf
    • https://s3.amazonaws.com/bejikefowu/addy_nagar_new_song_free.pdf
    • https://uploads.strikinglycdn.com/files/f07dc90f-f7f9-45b8-8566-87f9b8d7f1e7/come_follow_me_2020_1_nephi_16-22.pdf
    • https://uploads.strikinglycdn.com/files/ca360e07-f1ee-4e85-b1d6-f8b679991a6b/55508748544.pdf
    • https://uploads.strikinglycdn.com/files/85bdd6c7-4bd2-46c5-92de-8c7f02795628/vaxaminef.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed0b.bin
c88b45c975a6e7ce52503a01a52d3ccc40df941c4f622fba8e1560402f8205c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED0B 5660 bytes
font_01_sfnt_off00010049.bin
46cd93d4a414b08677b4d4b157cf7c1c8b711932b8bf3281ff9cf124922a729e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10049 11268 bytes

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