Malicious PDF — malware analysis report

Static analysis result for SHA-256 0854ebb1e2ce91df…

MALICIOUS

PDF

91.8 KB Created: 2021-07-06 22:05:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 69b14e94487975f9320f32653933c9ee SHA-1: 4d4a910b7d00414f0d84e3d3c1c86537934392f4 SHA-256: 0854ebb1e2ce91df3164d09de5d43b287e7be981af0c919147594f4a6bdc3d62
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised WordPress sites, suggesting it functions as a link farm. The presence of these links, particularly those on disposable hosting and using UTM parameters, indicates an attempt to direct users to potentially harmful external websites for phishing or malware delivery. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

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://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/ac7fdec11109e547d943b3473590a9da/33453686624.pdf In PDF document text
    • http://longarmacademy.net/fckeditor/userfiles/file/5322537764.pdfIn PDF document text
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/u0flkmnj9cr31olejf6c5cs225/60340290883.pdfIn PDF document text
    • http://lucann.com/Upload/file/46355644319.pdfIn PDF document text
    • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16075ccac064f7---tufafalese.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/642q9l25q917ibumc3kqa6cav6/punetakuvu.pdfIn PDF document text
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/00tvisi68r37791u6vnpeihv3q/sorejaxevifu.pdfIn PDF document text
    • http://drapikowski.pl/uploaded/fck_files/file/mupumibevipopafup.pdfIn PDF document text
    • http://kleinschaden.expert/userfiles/file/66382129297.pdfIn PDF document text
    • https://andrejc.si/files/file/55870990698.pdfIn PDF document text
    • http://fashionflutters.com/ckfinder/userfiles/files/belofev.pdfIn PDF document text
    • https://www.federatedlighting.com/wp-content/plugins/super-forms/uploads/php/files/093b5db66329368e786746037df2659d/49676364515.pdfIn PDF document text
    • http://phongthuydotho.vn/upload/files/55604516227.pdfIn PDF document text
    • http://thegreenlegacykeepers.com/clients/e/e8/e8dc17949b7ef813e9937e453902477f/File/67638583740.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/16073ecd4060aa---40006572955.pdfIn PDF document text
    • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c5f6119e3c5---kolotubuwipir.pdfIn PDF document text
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/160a4c29e7148b---dipoturagufofuvu.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d0a9deb32a---10577590140.pdfIn PDF document text
    • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/1608601717b0fe---guvotopenefuwilikunu.pdfIn PDF document text
    • http://alexdisinfestazioni.com/userfiles/files/zokixiwaputolibapeb.pdfIn PDF document text
    • http://dulichgiahy.com/upload/file/remow.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/jompqhp3asn6cisml37ujev09l/1416094539.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/af5ba0488b3370e2b0966c7617ad95c0/mavavosokezonegelixog.pdfIn PDF document text
    • http://merrygoldholidays.com/ckfinder/userfiles/files/sexuberu.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c858106090a---pemaxevex.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=lullaby+super+simple+songsPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4A9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fcc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC0 10808 bytes
SHA-256: 0cf058329f7df03fd4ea2c3e5d39d28b6707b5095f019fc2427ae1ff6ca541f7
font_02_sfnt_off00011566.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11566 17728 bytes
SHA-256: 133133082d78d7d6cd0ecd39585de893eda1923007371ac2a13ccd0512a853d4
font_03_sfnt_off0001432c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1432C 8584 bytes
SHA-256: 1436a59a860cf5c722b871661aaf1306861738ddc11ee977691029b51f4176f8

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