Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc61412317001467…

MALICIOUS

PDF

98.1 KB Created: 2021-07-02 04:59:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 119fcf1d4a368104f13f5e4ebce46246 SHA-1: e939959ae25d817e74c7e3841b13374a9fbce2d0 SHA-256: bc6141231700146774034d45491f4e22fbca9d569cebcc807abdc31718d402dd
156 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to multiple compromised WordPress sites and disposable hosting, suggesting an attempt to redirect users to malicious content. The document body is heavily obfuscated and unreadable, providing no direct clues to its specific purpose beyond the presence of these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

Heuristics 6

  • 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.
  • 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://artecgroupservices.com/imagenes/file/17513246204.pdf In PDF document text
    • http://fonnepal.org/userfiles/file/53030139546.pdfIn PDF document text
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/abfln6ug57v0tejplbr8kp45o4/6423980658.pdfIn PDF document text
    • http://ekotronic.eu/files/file/21596268437.pdfIn PDF document text
    • http://petukmahaaaraj.com/userfiles/file/89761660423.pdfIn PDF document text
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/e41c885f864f1c93db806217fe469d4f/74415312301.pdfIn PDF document text
    • https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/fevf666eal3cauhiutorrtn4oo/87870462818.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/9c42480ffad5afbd6e9020c7bb6f1063/xiluxokawov.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/11ebd8fdba7143e64950caf6992da4e1/liwijewujifiluzotujuwutuz.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/tr84bn3oq6teh3pdsuqc656t4o/vofoxuxurumovuto.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079c541954a0---18421760333.pdfIn PDF document text
    • https://presentkompaniet.com/img/content/file/lokorodiserig.pdfIn PDF document text
    • http://aeronautike.com/userfiles/file/75062246783.pdfIn PDF document text
    • http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16085d8563ce63---79227028783.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/3830bbef29e875df523d8d58f5032d0a/57445191841.pdfIn PDF document text
    • http://jhdljz.com/userfiles/file/1625023773.pdfIn PDF document text
    • http://abwninemile.com/uploads/files/banafobudosurupix.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bed0f3e08ef---govokobisusemugotojelo.pdfIn PDF document text
    • http://xn--2-140-swe8h.xn--p1ai/files/talamoxatazu.pdfIn PDF document text
    • http://surrattsville69.com/clients/8/81/8122276c22396d7fa0996010cc369f50/File/40202941972.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/995h5bcq0fs7scmin6r590nn29/pogibuwedikerebajowaf.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/16073f9d741987---nirugaguvolidizudikux.pdfIn PDF document text
    • https://askopenko.com/wp-content/plugins/super-forms/uploads/php/files/4270e0cbf9a6a6921e7c4a8fb3e93d76/73235848719.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160dc851ad3b45---fanibuxiwit.pdfIn PDF document text
    • https://leesman.com/wp-content/plugins/super-forms/uploads/php/files/c7e0b0a47e1caf925eb5e5eea2457f5b/99910367824.pdfIn PDF document text
    • https://armagedonspedycja.pl/files/file/wamazuvenelikupu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=braised+baby+back+ribs+dutch+ovenPDF 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_off000118c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118C6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000130d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130D8 18444 bytes
SHA-256: c0137a8da97340b9254e882c346e28d48548085de579055e93f0555bc003bc77
font_02_sfnt_off00016154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16154 10984 bytes
SHA-256: 193dbacaa9fa5afa9b3302cdbc0901eedc27f38db803f7e591b78ada8ff61850