Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3d9fe92e4951fa6…

MALICIOUS

PDF

142.9 KB Created: 2021-07-06 19:21:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 97cfcf19dfc57576d69db6ecc953eea1 SHA-1: 068ea062a0446d7b79a53fa6fac91c447c0966d8 SHA-256: f3d9fe92e4951fa6b83c3182b337cf87e53d06ae493fa948c83855b18d83118d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to numerous compromised WordPress sites and other domains, many of which host other PDF files. This suggests a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to distributing further payloads or leading users to phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9745

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 https://bcbc3399.com/upload/files/lebalon.pdf In PDF document text
    • https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b171cc468aa---59586186953.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606d22621e985---57777158729.pdfIn PDF document text
    • https://agentcctv.com/userfiles/file/nomimifosevixubux.pdfIn PDF document text
    • https://alshaabcoop.com/userfiles/file/31690013697.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa999ba330e---lofuvo.pdfIn PDF document text
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1608a452557118---munuximabajawo.pdfIn PDF document text
    • http://polskienarty.pl/data/aktualnosci_imgs/file/wemem.pdfIn PDF document text
    • http://seoulsquare.com/userfiles/file/pibija.pdfIn PDF document text
    • https://hrmconsulting.biz/upload/files/91660827562.pdfIn PDF document text
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/f967baedce3ff0325c2cfdeb7c95e87f/liguluxunoda.pdfIn PDF document text
    • https://cesiedizioni.com/userfiles/file/24194071828.pdfIn PDF document text
    • https://www.treehousecare.org/wp-content/plugins/formcraft/file-upload/server/content/files/160710d7345117---kobed.pdfIn PDF document text
    • http://camel-republic.com/media/userfiles/files/11035026356.pdfIn PDF document text
    • http://jhsclassof63.com/clients/c/c8/c8cc7cee7579ddcd469b669c0eb172d8/File/86404506789.pdfIn PDF document text
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607be1426d207---92012435989.pdfIn PDF document text
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/962fe796a755dea3de54951190c6ddb7/mimamopukagi.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160852ea607dd9---duvuliterivazoriw.pdfIn PDF document text
    • http://aftckwt.com/uploads/file/77866894933.pdfIn PDF document text
    • http://bhk-aindling.de/userfiles/files/wadisumozawamomu.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607b956b4713c---patedobapedimotiwa.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab15ca9e1d3---kafudatewidiw.pdfIn PDF document text
    • https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/85385d51ecd978fd1efd3560278e72bb/68265984052.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=top+10+most+elite+special+forces+in+the+worldPDF 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
stream_005_off000202a5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x202A5 24400 bytes
SHA-256: 49ac7648dd0129ada967fd7b48acb058e176a4a3025a2a067314baed843a2d87
font_00_sfnt_off00016fc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16FC5 11108 bytes
SHA-256: 651f2a30c03129c0e16f26962df08576f4bf84a3be7bc3fe76755e3b5bad9e30
font_01_sfnt_off0001898e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1898E 41864 bytes
SHA-256: adf9ec549105b2f5368cb90c750cb6415d3e78430b744c43038a85ece8ab326e
font_02_sfnt_off0001ea94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EA94 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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