Malicious PDF — malware analysis report

Static analysis result for SHA-256 e948e9b418181910…

MALICIOUS

PDF

87.6 KB Created: 2021-07-13 20:44:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 63d9c41d6e8e5f1c6e6a6f2e7cd0c97b SHA-1: f3fa4a47e2dd35ed6816ac6b4f10b9db424dd534 SHA-256: e948e9b418181910ed306c773f840c93be523421d418b0d57c862188c9c754fc
196 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier with high confidence. It contains a link farm pointing to compromised WordPress uploads and other disposable hosting, suggesting an attempt to distribute further malicious content. The presence of heuristics for QR code and callback lures indicates a multi-faceted phishing approach.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 8

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://doucetplasticsurgery.com/ckfinder/userfiles/files/71173174388.pdf In PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/36448831928a04579e5fab95c0123c0d/84692450253.pdfIn PDF document text
    • http://richmore.kr/uploadfile/fckeditor/file/14595467756.pdfIn PDF document text
    • https://magerp.org/upload/files/6018153807.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/7gluv0fa10s9nq2vd400pcl9mq/vetem.pdfIn PDF document text
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/se5e4gd24dvmqb2bh8ueiqotvd/saserixutad.pdfIn PDF document text
    • http://ctyrkolky-gamax.cz/data/dokumenty/wabokonaturomisuw.pdfIn PDF document text
    • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16095e4a79dc48---febufasab.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d641757c237---50711726600.pdfIn PDF document text
    • https://anmoul.com/userfiles/file/13443079703.pdfIn PDF document text
    • http://www.aportecnica.com/imagenes/editor/file/javutonifube.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abd5f5b2686---47646869371.pdfIn PDF document text
    • http://shuswapladystriders.ca/userfiles/file/28025320600.pdfIn PDF document text
    • http://hf1968.com/clients/48820/File/fanuz.pdfIn PDF document text
    • https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/go1uoageqvda8l0mbk1ljmacoo/vukizidazezolurogirogi.pdfIn PDF document text
    • https://vetranhtuongmamnon.vn/wp-content/plugins/super-forms/uploads/php/files/21vpjo8ogcv70vetj59rlkca5i/45812792838.pdfIn PDF document text
    • https://vannordenvastgoed.nl/userfiles/file/zerov.pdfIn PDF document text
    • http://faxik.ru/ckfinder/userfiles/files/werozazogubuwovirozumif.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/fk79hl8blbqt6p4qgs0lliaetc/jovibamuki.pdfIn PDF document text
    • https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/1850722fb9f8b33bf1dd7ae981273eac/66288560755.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1608bc37586fc5---nobixamoguzamonenov.pdfIn PDF document text
    • http://www.toptehnik.si/images/finadufitediboxe.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160b81ee505715---14164955186.pdfIn PDF document text
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608ccce2b7cdd---70090735667.pdfIn PDF document text
    • http://cuatro-pr.org/sites/default/files/file/98057275771.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=pros+and+cons+of+communication+technologyPDF 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_off0000f284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF284 17152 bytes
SHA-256: 5c3d63480757128fa286da458ce6081b36abd7a973bf2a19ac8bf446bfb59b61
font_01_sfnt_off00011f00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F00 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013717.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13717 11140 bytes
SHA-256: d4b341658d16dda1fa287b8519bd6d2e565fcdb0f09bd0b1fba1d7a457c59065

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