Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b0dacfe2ed1a1e1…

MALICIOUS

PDF

88.1 KB Created: 2021-06-26 00:10:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9a3861a9277c09fcd099bc4bb5f0baf5 SHA-1: ff30b78d8ddd62a371c127cbcf998cf4df2a7f5d SHA-256: 2b0dacfe2ed1a1e1a60c475b153ec55bce89bca0afdc271c207e1f62654a291d
156 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious. It contains numerous external links, many pointing to compromised CMS upload directories or disposable hosting, suggesting a phishing or malware distribution scheme. The presence of multiple PDF link farm heuristics indicates a deliberate attempt to obscure the final destination and potentially evade detection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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 https://garglob.ru/uplcv?utm_term=income+inequality+by+country
    • https://paklya.su/design/img/upload/file/voramalilaxiniwaz.pdf
    • https://miaousland.fr/ckfinder/userfiles/files/wobaginu.pdf
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/6fa512af9b839ca42b5b0305a66e6ce4/resasoxeruxilekojefeb.pdf
    • https://samngaimarble.com/html_upload/file/puzusiketefasaj.pdf
    • https://betenagro.com/sites/default/files/file/vuxitaruzomebu.pdf
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d02382e2e40---judeluzafa.pdf
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd9628ce20a---79052955328.pdf
    • https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607dff4e5c422---48107915900.pdf
    • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/4666c7188a018e526cb6e9990ffa78bd/29694329104.pdf
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/8c1b254b786e3c696d0eda2a7b1045b5/dinitalixose.pdf
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1609a48cb262d0---vimurivirubevijejij.pdf
    • http://arcdesantmarti.com/biocop/Images/images-editor/file/zujazifusaxuka.pdf
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/950ea2682666699cbf289b5cfd06ebfd/1553700243.pdf
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160b3e9298b151---manezubanekewunotil.pdf
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/ace558c8816192cbdfdf42765478d999/12580447838.pdf
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/ss5qdpvfvvr1ia0t6in6u0f4pl/jegosodozafemusasajus.pdf
    • https://audit-advisers.com/userfiles/file/99524300590.pdf
    • http://accessiblevehicleservices.com/userfiles/file/ruzenevaseba.pdf
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607381e9a0840---fobogoxevibonurovofafij.pdf
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1608508dc9ef78---vufixamedubosexefewaker.pdf
    • http://stalmost.pl/userfiles/file/52419831153.pdf
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607634a0ecb78---77362523774.pdf
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/160882efd18040---zifafopetezem.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_off0000f3d8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D8 16792 bytes
font_01_sfnt_off00010bea.bin
69074131816811cbd301dff2a6e5d0d3df80f6f0dfab558fada90094d1661999		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10BEA 18224 bytes
font_02_sfnt_off00013b0b.bin
bd0eb6142276cdd08eb6096fd82a11d90bc3e7e054cac9be724409239f69ad1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B0B 10672 bytes

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