Malicious PDF — malware analysis report

Static analysis result for SHA-256 53c29edb0f7f7696…

MALICIOUS

PDF

164.4 KB Created: 2021-07-26 12:41:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 017e9c903d2d086845505a6561c99458 SHA-1: 35bce2a5c8e94305408ed0a82ae0a602de076d90 SHA-256: 53c29edb0f7f769666976d42b00c354ec4f35254789c7dd9003f6b757626c736
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, many pointing to compromised WordPress sites and disposable domains, indicating a phishing or redirection scheme. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to malicious content or further stages of an attack. No scripts were extracted, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b29afe65a38---kofakajafekaxal.pdf In PDF document text
    • http://kojeneckezbozi.eu/userfiles/file/52960348354.pdfIn PDF document text
    • http://paradisoseminatrici.it/userfiles/files/gejemabokarinutanonetoz.pdfIn PDF document text
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/d6802ce4d0467b2b2e9d8779a5b11c11/16663467788.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbcd481d12---11280729939.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fb92171b3ea---gobitinuzevujumotulomasop.pdfIn PDF document text
    • https://blueridgelightingandcontrols.com/wp-content/plugins/super-forms/uploads/php/files/08e3d972257c8b4af4447e48a2e3657b/76946945403.pdfIn PDF document text
    • https://avayemehr-carpet.ir/data/file/37672825926.pdfIn PDF document text
    • http://neilreardon.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/nupiwomalinabovurek.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607d842301f28---72936845879.pdfIn PDF document text
    • http://learningkey.org/userfiles/pukuwevutujulagobul.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/9ae3ba87990877b1836bb3731249269a/22587508189.pdfIn PDF document text
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d39568e9181---fibuvavu.pdfIn PDF document text
    • http://ats-dz.com/userfiles/file/rofufijewupaxikebikow.pdfIn PDF document text
    • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/70c40c05281428132d0c52ef7669b319/nirowaso.pdfIn PDF document text
    • https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/8532bfdf5e9bdd700012e22bf3e2318e/favomodarilazawaniv.pdfIn PDF document text
    • http://remont-etalon.ru/upload/files/fubuladonizimuwob.pdfIn PDF document text
    • https://www.abrasco.org.br/ckfinder/userfiles/files/38428972196.pdfIn PDF document text
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/6da01b757e540dc77b4ec37535fbd7f4/30483483722.pdfIn PDF document text
    • http://anysoldierfundraiser.com/clients/a/af/af293656121fcb8b60a8c910089dd81c/File/mepawifijuxamukuxejivuniw.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608cc22908349---jatobavitumomipum.pdfIn PDF document text
    • https://sonarmusic.hu/up_image/file/vezafusazovizusaxon.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=dsm+v+pdf+completo+descargar+gratisPDF link annotation
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e92a26707a---fuxokofamer.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_off00021e65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21E65 20416 bytes
SHA-256: fee717f7d8c0f92076428e3d25a89bf88a700b7b1bd3648e3c5649fa3fae2315
font_01_sfnt_off0002520a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2520A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00026a21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26A21 10928 bytes
SHA-256: 30dff357b2a09908d0b54163efb0452619e58376be4cfd51453fff8978711b83

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