Malicious PDF — malware analysis report

Static analysis result for SHA-256 f69d7ce501790008…

MALICIOUS

PDF

91.7 KB Created: 2021-07-04 05:11:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5d1ecfe8ac178b1db4358610fbed8816 SHA-1: 4f0d20d7b2976c562d2aad1f890727f6fb9b93eb SHA-256: f69d7ce501790008cdf821e79bd7ac133442b94a8b7f34f8e69111650370e0a5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://earthtalismanjewelry.com/clients/b/b2/b27d4d76c51cd35ccef873a204118430/File/xibunaxewolibimelobamo.pdf
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160705fa803509---98746988075.pdf
    • http://www.moyekolodin.com/files/5322038144.pdf
    • https://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/9h6rl4ttet55hgtvdtdmp7snm1/biwuguwomuge.pdf
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/1adeb9ea7a62337e0240b6f5157a3d5d/94191890980.pdf
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/9958f295222e6a5f458f9964abfe2426/2334809624.pdf
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609f13f4b8a39---94157899886.pdf
    • http://carsonandchain-ip.com/userfiles/file/54046541843.pdf
    • https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/f126a577b5a6469f901a606bf8343596/zotegumir.pdf
    • https://www.latentoac.com/portal/wp-content/plugins/super-forms/uploads/php/files/pj75oca1gtu122sko214ctoqq6/32314148371.pdf
    • http://dzstock.com/Upfiles/file/86075786318.pdf
    • http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/a8af563a6a07732f6cf54dd48db3576a/23417857090.pdf
    • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/140986b6a000365242e3cc1c7568b075/bitubewekarapewobeg.pdf
    • http://crescentcarpets.com/userfiles/file/18478673293.pdf
    • http://musorcentrum.hu/files/article/file/gelawewepomavowis.pdf
    • https://cualuoihoanmy.com/uploads/userfiles/file/bibobal.pdf
    • http://airconbank.com/upload/fckeditor/file/konagobenesezu.pdf
    • http://garmagostaran.com/Upload/file/71569588456.pdf
    • http://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a84f827ae3e---somez.pdf
    • http://clearspace-design.com/CKEdit/upload/files/71139156002.pdf
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a0f8e920bf8---gibibefi.pdf
    • http://cropscipublisher.com/files/upfiles/file/kukudijinajuse.pdf
    • http://emirates-offshore.com/uploads/image/file/feniwadobofeki.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=brand+activation+strategy+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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105ed.bin
1ee609bb0d4eb93862899f1670d8fb2ddec09227adf8e09839cd808ffcab4136
pdf-font-stream PDF embedded font (sfnt) at offset 0x105ED 16488 bytes
font_01_sfnt_off00013052.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13052 16792 bytes
font_02_sfnt_off00014869.bin
c3a109cdd6fe29d9d7cc0e5a7a24d02350e5acb705db86ca75601523aec0d050
pdf-font-stream PDF embedded font (sfnt) at offset 0x14869 10984 bytes