Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3743fdcd472424f…

MALICIOUS

PDF

93.4 KB Created: 2021-06-29 08:55:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 176b204851b38a960a3e3ae1cd8b90b3 SHA-1: f18635f7c775f6f8507d1aeb75913d5ae682e96e SHA-256: e3743fdcd472424fcfb57a71c711c5dd43128d86b69e2c71b08872b0e5418c90
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to compromised WordPress upload directories. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary function appears to be acting as a link farm, likely to distribute phishing content or further malware stages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bac5d8181ef---91456778888.pdf In PDF document text
    • http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bedd2e1c3f9---folegiwu.pdfIn PDF document text
    • http://reinforcingourheritage.com/clients/0/08/0860c2a235168fe7e4a745c824023bdd/File/mubiranomasise.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079ae26f1b0f---xuwatizavopeloxorenowa.pdfIn PDF document text
    • http://morgancountyoh.com/userimages/fixer.pdfIn PDF document text
    • https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607eae63f2371---jozezegonubitemupomuba.pdfIn PDF document text
    • https://activepymes.com/pub/file/boneg.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16071bb623d5bd---75409871537.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/7a73838e1ee8ad5d351c91bc77463330/kurofaruduvakowalarokavo.pdfIn PDF document text
    • http://asbufestival.com/uploads/FCK_files/file/35860802236.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609adf744caa8---dezekod.pdfIn PDF document text
    • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/f99d3eaae60e9bf7e04d52e2693f8594/xofopemi.pdfIn PDF document text
    • http://becucci.it/userfiles/files/96748990690.pdfIn PDF document text
    • http://mfcwestenkwartier.nl/beta/userfiles/file/66057928041.pdfIn PDF document text
    • https://astek-telem.fr/userfiles/file/jegikizemari.pdfIn PDF document text
    • http://banghetretunhien.com/media/ftp/file/dasolupasoxaz.pdfIn PDF document text
    • http://keyflounge.nl/userfiles/file/88375136382.pdfIn PDF document text
    • https://dm288.com/slicice/file/94010962147.pdfIn PDF document text
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16092501c27217---25592506305.pdfIn PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16097d34461566---robebekivozumurimovo.pdfIn PDF document text
    • https://tyeetomsfishing.com/userfiles/file/xuzozozinozozaka.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607212eeb57e8---88357460290.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16077899e5fd30---70245380124.pdfIn PDF document text
    • http://artside.org/data/temp/file/xodiziwusukibukowuzida.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=all+my+sons+charactersPDF 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_off00010b09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B09 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012320.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12320 10496 bytes
SHA-256: 617912ca59d48aaf043aed7b009c371e5726455c7f33b9a22901006a490c5ad1
font_02_sfnt_off00013ade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13ADE 17504 bytes
SHA-256: 44cc5e177ec79182a57a05db4ca241b832cd0cd525dc3175b70ee42136b0c895