Malicious PDF — malware analysis report

Static analysis result for SHA-256 192fe6ff6ae26289…

MALICIOUS

PDF

131.3 KB Created: 2021-06-26 11:53:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5e84772874d4f558bdee99fe5f79d46a SHA-1: b7e882f16602de4fa6333ba41f9cf0480b553bb5 SHA-256: 192fe6ff6ae26289ab40b53514c6f95801b00822ca881d4ca51c2762a7a6747f
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by multiple heuristics as malicious, including a specific ClamAV detection for 'Pdf.Phishing.Trojan'. The document contains numerous links, many pointing to compromised WordPress upload directories, suggesting it functions as a link farm to distribute malicious content. The 'SE_INVOICE_LURE' heuristic indicates the document likely uses a fake invoice or payment theme to trick users into clicking these links, which would then lead to the download of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9858

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://crewmak.ru/uplcv?utm_term=o+level+accounting+notes+pdf
    • https://myveolife.com/wp-content/plugins/super-forms/uploads/php/files/a484022d04e22221e4694619bdd8f15a/74029251240.pdf
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c3be982703---fewutu.pdf
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7478e350c---jurupokijidosefujatidomo.pdf
    • http://qca.ch/userfiles/file/45764493458.pdf
    • http://budohurtsa.pl/userfiles/file/dizofowebotaluwudigiluwo.pdf
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/96300166e39a25b7274beac3b97532ac/romixajudepamisuturok.pdf
    • https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/tvg5a1hu43lvueis8a51l4al96/jexafivanamises.pdf
    • https://chambres-hotes-aube-bleue.fr/userfiles/file/55830195353.pdf
    • https://aadhaarretail.com/administrator/imagetemp/file/8084636899.pdf
    • http://jagatjyotischool.org/jagatjyotischool/userfiles/file/3531969775.pdf
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16072f69f398f1---zofosol.pdf
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fb759e5ced---vulanelireliretoge.pdf
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608d514d42656---40552857342.pdf
    • http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160be30dbea4d0---69257772813.pdf
    • https://sandzak.best/wp-content/plugins/super-forms/uploads/php/files/835af5e82ec250b1676309a147c378ac/jojitekalalimudafi.pdf
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/160b46c5fbbd76---59398778286.pdf
    • https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/d3961af47dc08782d6a0688c48a21fe6/92340337469.pdf
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/c5a87ba5f762231f815418fb8cc296c3/62413462282.pdf
    • http://aydinservis.com/ckfinder/userfiles/files/47726250991.pdf
    • http://irina-beha.com/ckfinder/userfiles/files/21262487087.pdf
    • http://abaj.cz/UserFiles/File/murur.pdf
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/cf1736f958d9d9797d4ff5ab19d076af/zupugefezasutaxirabopuwil.pdf
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/16091926102635---relak.pdf
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/af1491a69a42d5b55473fbc86ed8bf12/49317057510.pdf
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aaff11a8226---41084308433.pdf
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/10ae6a22d294e60537131bb80d14b801/75209729014.pdf
    • http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/1897155469609885b954c9d.pdf
    • http://paynechapelduquesne.org/clients/9/9b/9b910c66cef3ae2d1bb1fd5804160a19/File/61497149764.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_off00019d3c.bin
b4465127409f8cee0d8d51e1e1fb55191f4b10c270e28b66a7da7b3bffcdb47d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19D3C 10888 bytes
font_01_sfnt_off0001b65f.bin
32a93fdf112729cf97ad4ea3a815f4283dfe2fba9d3e94ff4832ffce8957a58f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B65F 18428 bytes
font_02_sfnt_off0001e708.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E708 16792 bytes

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