Malicious PDF — malware analysis report

Static analysis result for SHA-256 d27ed4d9ee02d2db…

MALICIOUS

PDF

77.6 KB Created: 2021-02-17 03:29:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: cf0d1bb51e3d79398ee1c40e82ea36cb SHA-1: da5d132fb39c04ed9717a559299b08092070c90a SHA-256: d27ed4d9ee02d2dbe8999ecbd9a7eabcb7215f8a3b562e332d298ade65539189
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a domain that is likely part of a phishing or malware distribution campaign. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/strik?utm_term=smart+calling+app PDF link annotation
    • http://potolkilife.ru/411199489049z16y.pdfIn PDF document text
    • http://vuzitofakomuj.22web.org/xupuja.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzifixe/hahv5el/restart_remote_server_through_command_prompt.pdfIn PDF document text
    • http://amaryllis.space/skyrim_sex_mods_in_actionxcxty.pdfIn PDF document text
    • http://opsnatur.fun/edinburgh_airport_mapifu4e.pdfIn PDF document text
    • http://aydym.club/chappells_of_bond_street_sheet_musicwkws0.pdfIn PDF document text
    • http://istra-backwater.ru/gefusovaxarezapsx1jc.pdfIn PDF document text
    • http://uabiomanix.xyz/batla_house_movie_full_hd_filmywapwoaek.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jixetumoxefa.epizy.com/zolozaxaderuges.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/40491271025.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/78154570384.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/john_gottman_marriage_worksheets.pdfIn PDF document text
    • http://vigukesege.epizy.com/43897344555.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/juwipofodawavubewizow.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/15967313755.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBFC 5176 bytes
SHA-256: 506b2e74fcd1920f0271de1b5ee7b92a07d32597dc7933c338ac532d1f80559a
font_01_sfnt_off0000ed7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED7D 11272 bytes
SHA-256: 3e21c5a6c610bea9ad1880b26aaafc320e27a2c8a8955427a31fb565d3780a8d
font_02_sfnt_off0001142e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1142E 16264 bytes
SHA-256: 68de6d6b34629de777ab3ab8a9f134c855f305daa617ab346a3ffef9837f5fc7

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