Malicious PDF — malware analysis report

Static analysis result for SHA-256 aceafb706e7b8b7c…

MALICIOUS

PDF

87.3 KB Created: 2021-07-09 16:11:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: d0d8f0b4cfe10671d03cfc842aee8a5c SHA-1: a3619f4c3fb21d8c4f8e9c578821b8d45ad6f870 SHA-256: aceafb706e7b8b7ccccd6564ee33cef946b231b96442dff5f0e48c69d793830f
196 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of an advance-fee scam. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a tactic to distribute malicious content or phish for information. The document's structure and heuristic firings strongly indicate a lure designed to trick users into downloading further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://nomylo.ru/uplcv?utm_term=spring+questions+for+experienced PDF link annotation
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/sdiossm37dmktmn2cmbopu45j6/mupagakaxukubes.pdfIn PDF document text
    • http://airsoft1.ro/files/file/50917858217.pdfIn PDF document text
    • http://riph.pl/userfiles/file/famutomemoxuxo.pdfIn PDF document text
    • https://jodhpurtravels.com/nbloom/fckuploads/file/71584229404.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/9u35infstb0nqb47eoet3i5sp2/tozefinorodisoxuwuzidu.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/022317109011.pdfIn PDF document text
    • http://hzkontejnery.cz/ckfinder/userfiles/files/vadoxobi.pdfIn PDF document text
    • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/108f3aa4793c27a6eb2169e725b29701/rifagabagutapopufodomi.pdfIn PDF document text
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/f4v51tkk65o1q4tg5pl9spmj62/57068306824.pdfIn PDF document text
    • http://be1971.com/clients/a/a1/a19be2fc4cf8b198b52f296748481ce5/File/50791240898.pdfIn PDF document text
    • http://czpohledavky.cz/userfiles/files/10695611404.pdfIn PDF document text
    • https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/64bacd437195996ce98dd2ed1ff6e595/zupopomejodo.pdfIn PDF document text
    • https://cardion.dk/gfx/fckimages/file/bidax.pdfIn PDF document text
    • http://wolfpackbasketballacademy.com/content_docs/saloninus.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e3103abd3be---41272051625.pdfIn PDF document text
    • http://locthanhwindow.com/img_duhoc/files/79528441198.pdfIn PDF document text
    • http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b5f6ad4bca2---wiwurepawexagatifiso.pdfIn PDF document text
    • https://rubenferro.com/userfiles/file/tiritapoxubonokile.pdfIn PDF document text
    • http://verynailscm.com/user_img/file/kimetafubeg.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608298e861bd2---lanux.pdfIn PDF document text
    • https://producedepot.us/userfiles/files/12191576578.pdfIn PDF document text
    • http://ddservice-bmw.pl/userfiles/file/85254094736.pdfIn PDF document text
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/160d0617e42506---90858736764.pdfIn PDF document text
    • https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/ej1oliifsji3eh1q6c1r7mebg0/galomakolavizal.pdfIn PDF document text
    • http://seibyou-koujien.com/files/files/zisolivovi.pdfIn PDF document text
    • 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_off0000f078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF078 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001088f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1088F 11012 bytes
SHA-256: 16ecb0e18b81625a65dc265fa0a74b3e3dc479be11fd8200048502729a613a86
font_02_sfnt_off000121c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121C1 17552 bytes
SHA-256: c77a015d2649ee7e30c546f21103f42ef251db007be6eb364578456e189dc8f8