Malicious PDF — malware analysis report

Static analysis result for SHA-256 14a0642f56d00f38…

MALICIOUS

PDF

176.9 KB Created: 2021-07-17 16:57:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 62817a86c31150c205a02de5b1e36d2e SHA-1: 57d4687eefdf8b63a74ee1ac87b8f1af8edce9f8 SHA-256: 14a0642f56d00f38945eb9a6551d5c1932bd0f20e1504f46f86e2667318ccef5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to compromised WordPress sites and exhibiting characteristics of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

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://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072f93b8a696---lufusavaw.pdf In PDF document text
    • http://noxsun.com/jingkelun/userfiles/files/20210610031908.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1608ea22eb8215---lidulipiwajab.pdfIn PDF document text
    • https://gberwanda.com/gbe/useruploads/blogs/files/80875179945.pdfIn PDF document text
    • https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a821dd3d5e6---38377155804.pdfIn PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/qq9afugbdu2964eoo2j846g3t0/9527087233.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a5cf51bdd97---gatusomikirugitupixe.pdfIn PDF document text
    • https://www.movingwithmagna.com/wp-content/plugins/super-forms/uploads/php/files/c0dd0438ccacc451c7ffadd96508e94a/bunupofovidomofuxubuze.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd2c9009d62---rusowitigidaxedarixowiril.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/0ecae5a29ff6c2ade902ede8b4fa2832/97173779723.pdfIn PDF document text
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a7143039759---xepujozewazup.pdfIn PDF document text
    • http://thaide.org/userfiles/file/52568531010.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070694a61a71---wafitowabadew.pdfIn PDF document text
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1606ed6748c873---nizuvirodifewuzemu.pdfIn PDF document text
    • https://meesens.be/KrMee/Tekstverwerker/42052014865.pdfIn PDF document text
    • https://gobelsprofil.com/upload/files/lotefatodavokazame.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a670367d875---96833242585.pdfIn PDF document text
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/f22976bfa5e832b5956a05f705e64060/11239933543.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/a680df545c66cf0f50d27ba6614988a6/xolulolupajax.pdfIn PDF document text
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b33b8b23ed---masivesotezemesujox.pdfIn PDF document text
    • http://lawrence-spruill.com/clients/42275/File/gunowinezimisemukadu.pdfIn PDF document text
    • https://areicon.com/images/file/29741409969.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=mark+pike+groundworksPDF 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_off00025761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25761 10696 bytes
SHA-256: a86df485d66d9788dd1b0e28e6142a5c187fb15aeb6fd952160e024252b9b3a5
font_01_sfnt_off00026fe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26FE0 17644 bytes
SHA-256: cfe9da9c06cc3d94faf6454bacb94ec284b5185b2c4f9aa2d8ecdcea152d8c32
font_02_sfnt_off00029e38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29E38 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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