Malicious PDF — malware analysis report

Static analysis result for SHA-256 e96eb15b22e5e23c…

MALICIOUS

PDF

86.8 KB Created: 2021-09-11 01:16:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 93348a240a75f025265b3a41a7c95676 SHA-1: bb2e2afe01b0191945c41fb4b4d2bc45135d0376 SHA-256: e96eb15b22e5e23c69bc7d710d82d263b2c156a05232dcf1a482c932d5ad65db
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by an ML classifier as malicious and contains numerous external URLs, many of which are hosted on disposable domains. The presence of the 'SE_INVOICE_LURE' heuristic suggests the document's content is designed to trick the user into clicking these links, likely to download further malicious content. No scripts were extracted, but the overall pattern indicates a phishing attempt via a malicious attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 5

  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://nomylo.ru/uplcv?utm_term=paypal+here+android PDF link annotation
    • http://musicpark-live.com/userfiles/file/wutubafi.pdfIn PDF document text
    • http://bafiti.com/sklep/userfiles/file/24159048761.pdfIn PDF document text
    • http://frigotechreina.com/userfiles/files/3522866611.pdfIn PDF document text
    • http://hungthanhauto.com/luutru/files/22003383702.pdfIn PDF document text
    • https://bursac.net/userfiles/file/bosivumumipojat.pdfIn PDF document text
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139e8c98bc71---tamuxi.pdfIn PDF document text
    • http://artpolinakuzina.ru/pict/file/lixuxisofudako.pdfIn PDF document text
    • http://nickels.design/ckfinder/userfiles/files/6857966971.pdfIn PDF document text
    • http://bayzones.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/18325628404.pdfIn PDF document text
    • https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/16135b117e54d2---70511257319.pdfIn PDF document text
    • https://patriciogaete.com/upload/file/tuwepanenevariluloju.pdfIn PDF document text
    • https://snoman.mb.ca/ckfinder/userfiles/files/93866829911.pdfIn PDF document text
    • http://geodeslaboratori.eu/userfiles/files/kidefusuxaged.pdfIn PDF document text
    • http://de.ruben.pl/ckfinder/userfiles/files/24848202972.pdfIn PDF document text
    • https://www.traitagri-solutions-alternatives.fr/ckfinder/userfiles/files/vapubuvevulijixukutobis.pdfIn PDF document text
    • http://cameralehiep.com/hinhanh_fckeditor/file/97783686527.pdfIn PDF document text
    • http://bio86.fr/userfiles/fichiers/59606074085.pdfIn PDF document text
    • https://investincarpathians.eu/app/webroot/media/files/vikejitonakuwakarapuf.pdfIn PDF document text
    • http://www.peritaonline.es/ckfinder/userfiles/files/sojezumoxuwek.pdfIn PDF document text
    • https://maisonforville.be/documents/file/wifawos.pdfIn PDF document text
    • http://art-wonders.com/ckeditor/ckfinder/core/connector/php/uploads/files/96963066879.pdfIn PDF document text
    • https://standsimulator.com/ckfinder/userfiles/files/laribogarolas.pdfIn PDF document text
    • http://merrygoldholidays.com/ckfinder/userfiles/files/16838904132.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/totokonuzoxegijakasinanag.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://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_off0000edbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBB 10340 bytes
SHA-256: 3b6c7875d3ed189ab4e2df5b255ff66a8a8f95523722e64e835a478f19605dc0
font_01_sfnt_off000104eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104EB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011cfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CFD 19488 bytes
SHA-256: 446940b042171e079ffef54087f0849a57dafcb44febfb7b4154c98f258d03a6