Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e74af3066e775d2…

MALICIOUS

PDF

139.0 KB Created: 2021-06-28 16:49:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 2fa044137269355f344a3db86dfdb664 SHA-1: 23b1eec2706369580086d1ad6a467a2589f45673 SHA-256: 6e74af3066e775d2d8b9d9b8641b8dd36ae456135a7715d5c75bc00809f8572e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. The PDF contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the presence of external links and the nature of the heuristics point towards a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

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://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/acf5b2ed09a0e7c93c1884d36f6e2973/zabifajemegari.pdf In PDF document text
    • http://www.alex-vasilkov.ru/images/wisdom/file/89363175449.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b5e3a0d56ed---26563485830.pdfIn PDF document text
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/160a9b32fcbb1b---52865907665.pdfIn PDF document text
    • https://www.makathastaliklari.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4f8ac92c5---19511415489.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160726acd1e2ee---gavegirizinasam.pdfIn PDF document text
    • http://a2itsolutions.com/chop/multimedia/userfiles/file/bekaxifizikozubuxabade.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/r623hq1v2pvt8gcbsnbm8hofjd/13415709457.pdfIn PDF document text
    • http://aaaexpressheating.com/userfiles/file/minizugiripewaruzipabilox.pdfIn PDF document text
    • http://timelessmebel.ru/wp-content/plugins/super-forms/uploads/php/files/c8e8acb4e1e494893cf4b1181db44531/sozen.pdfIn PDF document text
    • http://otoozevran.com/resimler/files/59339657297.pdfIn PDF document text
    • http://ceomit.com/fckupload/file/mirirumeput.pdfIn PDF document text
    • https://steklo-shik.ru/userfiles/file/zimuvagirepumis.pdfIn PDF document text
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085ba4e41f14---wemirirajok.pdfIn PDF document text
    • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/d758c547ce45f89c096ed44b16e3edaa/puketilasuxob.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/54897f465aa66213def13241f9f3df0c/labamizipaxamu.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089c4cbd3b95---bapelar.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c84be995d62---xezufuvisolux.pdfIn PDF document text
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/nvr82rvn975al1e48ui0v8fusu/tazetupufobawasabobigogud.pdfIn PDF document text
    • http://evevoyance.fr/adh/.-/file/68880292521.pdfIn PDF document text
    • http://safeabortionnepal.com/userfiles/file/67468184182.pdfIn PDF document text
    • https://forcechicago.com/wp-content/plugins/super-forms/uploads/php/files/cc87a35129f70b90a15a2426235c2440/52838608383.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b982b005be0---kikakixowonovas.pdfIn PDF document text
    • http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160d519b9a7a56---rebibabuvuzojojupova.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=coriolis+force+and+its+applications+pdfPDF 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_off0001b7f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B7F1 10644 bytes
SHA-256: b0cfeae289edf90e5d5a0a6acf24359eefbd49d90d67f50be403ef923fb68418
font_01_sfnt_off0001d06f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D06F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001e881.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E881 20588 bytes
SHA-256: 3ac20374b3f6556834ba8e4933a749c62e4fc0e4984ca4ca9a5c752b5d9e4881