Malicious PDF — malware analysis report

Static analysis result for SHA-256 beb1f95a2286e017…

MALICIOUS

PDF

91.0 KB Created: 2021-07-01 15:50:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: cc6a6ad4009f253057679139cc0454d0 SHA-1: dcbfa0d2a38e17eb0372140664afa654372e5b2f SHA-256: beb1f95a2286e017efe768c1483d7f927e6b28d2ef2677455b28e0c7c004a511
156 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous links pointing to compromised WordPress upload directories, suggesting it is used to redirect users to malicious sites. The obfuscated document body and the nature of the URLs indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://archism.ru/uplcv?utm_term=the+crew+trophy+guide
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0457112be8---zujivu.pdf
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3114b7e563---bofaxukajeburiwixo.pdf
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609847db808bd---zowibosefigegesovunuture.pdf
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/1607e0a6dadfe5---fovena.pdf
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca783246d5---fosevozevejukuzoj.pdf
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160802a8b87e39---21058641679.pdf
    • https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/602b3e26590cc00d6a08cf6b433cf55a/94677630518.pdf
    • http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085ccf97741e---92905659188.pdf
    • https://getadoc.in/ckfinder/userfiles/files/36278939561.pdf
    • https://maydangson.com/vietkiendo/upload/file/7594772940.pdf
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092beaeedc43---81575872948.pdf
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c637ac9d5eb---80182907934.pdf
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ebbf4e6cb1---45076779204.pdf
    • https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/29d08485a257eca08d46ac06d4c1225b/mibasemotabolenozumalus.pdf
    • https://bem-sa.com/img/file/buvuzosi.pdf
    • https://asiarsolutions.com/userfiles/file/44749369271.pdf
    • https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ce7aa621d6---28303794441.pdf
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607101730215d---xubelikolijire.pdf
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac1ae7934be---pigiwaxapimusinimimi.pdf
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/af8f6b242a0ff5adde18f985d7aa8bf1/38702190675.pdf
    • https://associazionedynamica.it/uploads/file/zanijoz.pdf
    • https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2425d224e5---tulatutanuposujigis.pdf
    • https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/jh0jv08lvrcdab3gptr7j00638/mawesokuduseb.pdf
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/f2a63488bd16ff3341517fd53e36406e/21508123591.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_off00010158.bin
c115f9aee4116fce570051844dcb9f8a83ec6d8867ce63f887dac3e3953e3149		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10158 16996 bytes
font_01_sfnt_off00012d00.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D00 16792 bytes
font_02_sfnt_off00014517.bin
5244b021f1c9d659d8b11b5411b5ec928256df68ce242fe74b626a102e670277		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14517 10576 bytes

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