Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0d6c5524f84394c…

MALICIOUS

PDF

79.4 KB Created: 2021-06-29 11:54:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d8763220651925507751461bf1f5dbb5 SHA-1: 16b4f488e352d75a92bf15a09603fa14cad0f310 SHA-256: f0d6c5524f84394cc59cb9dc97e8d857fc2683b08b0c41154ac01f549aa04b41
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external resources, many hosted on compromised WordPress sites, suggesting a link farm or redirection mechanism. The presence of a 'download button' heuristic further supports a lure-based attack pattern. Although no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://alexlunacoach.com/img/editor/file/56740459543.pdf
    • https://toolsatool.com/userfiles/files/95835961640.pdf
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/bf11b62d51ead60c999e413d2ac17878/majogi.pdf
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/lmojoiq9fafkr94qmdr92pvmiq/50915912904.pdf
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1608021cceb802---47276515031.pdf
    • http://historia-bfured.hu/userfiles/file/87568542047.pdf
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/2da21df80beb07f078f07ffab69d49d5/pisuwa.pdf
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbd2db4951---64135736102.pdf
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/5241b01c2d0f96dbd5fe92288df65160/78402160776.pdf
    • http://www.lugashotel.com/data/editorfile/dawebubadumanek.pdf
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f57e6a409b---3048934902.pdf
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073db26d985d---zijiwumigitotonapeduxe.pdf
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/1d6a739a11c8f45afff148b56d8c28d8/toxemagerizod.pdf
    • http://ahs1978hounds.com/clients/0/09/09313dc2b2b2138818c22350edca9cf7/File/feraz.pdf
    • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/8c716a1da4067a3d0c6e9db0b8d91116/dipikeraxopelavaj.pdf
    • http://the100voicesofgospel.de/fichiers/newsletter/file/pegol.pdf
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a07b90a00f5---vekilivuxilaralivek.pdf
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/asg1k64g4m3ve7sha586nl4dl5/suweneboxos.pdf
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/16075d07acddad---kulazuwubilikaz.pdf
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/kav895h4755dajb5g4ovn4ej02/rolidepasonorejapizibos.pdf
    • http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/98d594d688c057867840aeb77c7d6f20/rapixarefakavusog.pdf
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/5ovvchemcs5em56dju8p59e6i0/vasuwivifapakedo.pdf
    • http://eastendmediation.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/kaledekatebizabap.pdf
    • http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160852bfedba83---gekifamenubetegage.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=present+simple+multiple+choice+exercises+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_off0000d2d7.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D7 16792 bytes
font_01_sfnt_off0000eaee.bin
20b531e8ec321cf4ab87b35b5047a39d33ff85a7e6127df38a5d2bb66a2a5732
pdf-font-stream PDF embedded font (sfnt) at offset 0xEAEE 10924 bytes
font_02_sfnt_off0001040d.bin
cf3e09c648c831e38c2ccbe2ecea68eac69126f93ca0803263ba8774d215803b
pdf-font-stream PDF embedded font (sfnt) at offset 0x1040D 16960 bytes