Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0edd7cd3a317f3b…

MALICIOUS

PDF

86.7 KB Created: 2021-08-15 02:26:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 653ee2a89fdeaa8b820004c755bfaf6f SHA-1: b1a8519b42f6e77ce5c01df72dc7a17876647f68 SHA-256: b0edd7cd3a317f3b7118c676b2365f7aa7fed4416dc110e1b0ed303a4a1efba6
164 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan payload. It contains numerous links to compromised WordPress upload directories and disposable hosting, suggesting an attempt to host and distribute malicious files. The presence of a 'download button' lure further supports a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://seltec.io/images/uploads/files/widavesixijixuzeburibitux.pdf In PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070e891044e6---warewobonovudosurapudir.pdfIn PDF document text
    • http://moje-stranky.eu/userfiles/file/penipak.pdfIn PDF document text
    • http://anhuishangbiao.com/upload_fck/file/2021-7-28/20210728194206681653.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d0735a3324d---gobazananavawomozuvo.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/snm4obdbi4b6vhf0a04h0oa1k0/zawumirebapapiwugefejo.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/nmdom44hnbbtlfff8kfgvk1u0o/boxiseposabuso.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/ed9e235393b440191561c011e2dbe441/39874304197.pdfIn PDF document text
    • https://jager-ig.tw/up_photo/file/redabipogubizagujokosas.pdfIn PDF document text
    • http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4238a2d5f0---60154587054.pdfIn PDF document text
    • http://phdpecs.hu/userfiles/files/jaximesuzep.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e236fa81159---monazusabivepobaliva.pdfIn PDF document text
    • http://kino-cosmic.ru/sadm_files/80387222600.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c392d01ecb---77224166142.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1607302c637c5d---dajufami.pdfIn PDF document text
    • https://www.enterpriselighting.com/wp-content/plugins/super-forms/uploads/php/files/3657b81345f3b2fd393c4a60b447f5d9/dimamozixadiziraxe.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/d655v8ugnt7691bsqdgrb7261d/denisuvasodapebufigena.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/16086e28aa34ea---81188131746.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608e6ed763f76---99183675664.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16106fef8309d7---mefekemasuvo.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/afef03de69050ab6b82def96373b8e15/93533295946.pdfIn PDF document text
    • https://jgmurphy.com/wp-content/plugins/super-forms/uploads/php/files/a4302b4541cb8a8a936e6d98cf1a18fb/85480125316.pdfIn PDF document text
    • http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160b2123e6aa1d---sepegemuvusuwegoruf.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac2dcaa655e---fibazerusudotuvir.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=virtual+villagers+origins+2+mod+apk+latest+versionPDF link annotation
    • 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_off0000e70e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE70E 11084 bytes
SHA-256: a011fbfcc59da5e69a9aa805f76c53c8c40294dab97d07f3caec2ee253ded862
font_01_sfnt_off000100be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100BE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000118d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118D0 19464 bytes
SHA-256: 6d1a7a7ba06fdd03812af5b731902f54947580545311f48a7b892d0a7227ea25

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