Malicious PDF — malware analysis report

Static analysis result for SHA-256 96bceabc57a74ed6…

MALICIOUS

PDF

107.2 KB Created: 2021-07-07 22:59:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: f059d5faaf0d944f39989474362d3efd SHA-1: 0e41322e40727eac58a14899f8b4d5b4d9b32a4c SHA-256: 96bceabc57a74ed6acf9f716dcf173de2631b159a4a6fe5354ba876dcb244df0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites and disposable hosting. These sites, in turn, host other PDF files, suggesting a multi-stage attack designed to distribute malware or conduct phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9746

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • 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://allytemp.ru/uplcv?utm_term=saviour+in+other+languages PDF link annotation
    • http://moon-villa123.com/CKEdit/upload/files/foxomaw.pdfIn PDF document text
    • https://aspaeng.com/files/image/files/33243338932.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/adf5cdc729cc801dde93390d21ca3294/zizuvop.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0d2ea1177b---jowesodalovibene.pdfIn PDF document text
    • https://bahia-group.com/ckfinder/userfiles/files/tumob.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/77820e3421b2790e5b6e225b7791cd1e/24719596221.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16083c4747f80b---dokofuxukuxamemivojomemas.pdfIn PDF document text
    • https://ubranni.com/uploader/files/varefifif.pdfIn PDF document text
    • http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606dd39d3cc8b---rezafukovodalak.pdfIn PDF document text
    • http://istrouma1971.com/clients/9/9b/9b88b062b8d6af44b28e209fcb06d7d5/File/10721330866.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/olpd172s6jifkfdqbr4dnkiaj3/36922653794.pdfIn PDF document text
    • https://postelezmasivu-ostrava.cz/ckfinder/userfiles/files/gulukenirilijisuwexo.pdfIn PDF document text
    • https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/f0c2bsl71mbohefvofdnk9ten2/kimarafefoba.pdfIn PDF document text
    • https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/000b9c9bb5919e2e59089f4deb4e9063/48729462345.pdfIn PDF document text
    • https://houstoncoinshow.org/FCKeditor/file/23041616824.pdfIn PDF document text
    • https://mkycc4.com/kycc4.com/userfiles/files/zemati.pdfIn PDF document text
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6f3be9b7b2---didenaranukoki.pdfIn PDF document text
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160757ab10ffe0---18547955891.pdfIn PDF document text
    • https://honda-otolongan.com/upload/files/8681344844.pdfIn PDF document text
    • http://banghetretunhien.com/media/ftp/file/nusitedegolesagewimipem.pdfIn PDF document text
    • http://gramercy-grand.ru/files/file/fomapixomogubimana.pdfIn PDF document text
    • https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/fbc76509fe98d9161469f14c94f52f68/48184505110.pdfIn PDF document text
    • http://sungsam.net/userData/board/file/15583078971.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00011451.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x11451 19004 bytes
SHA-256: 6c100c913c46b3c9c931927d801c84811c3a51eee635bc38a7eed6015c287f62
font_00_sfnt_off000106d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106D7 3464 bytes
SHA-256: a8161c2f5ba9235eb51b4fcc43b6bb219725019365cb8d38f9ec25dfe5ce54ff
font_02_sfnt_off000133d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133D2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00014be4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14BE4 23764 bytes
SHA-256: f49ba6ab1671f2e66d472dfd23aeeb9e988753f65b85dd812be52bed4dc86029
font_04_sfnt_off00018612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18612 10628 bytes
SHA-256: 04331b5fc66f658436e3db30e101acb4f39cd9367f25c5ca3fd8ef2feb2bac07

Open this report in the interactive analyzer, or submit your own file for analysis.