Malicious PDF — malware analysis report

Static analysis result for SHA-256 67399e026e734465…

MALICIOUS

PDF

188.7 KB Created: 2021-07-01 16:23:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: addc61530dae50af23f9b8afce6a1f87 SHA-1: ec757ca61fbefd786c550d16664a6364efbc65fd SHA-256: 67399e026e7344653164e9c4c16324fc781ba1ff0e889aa85eb9759a31c49863
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload storage or disposable hosting, indicative of a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded links are consistent with techniques used to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9916

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://moveo-sport.pl/userfiles/file/palafamesi.pdf In PDF document text
    • http://www.dramayaramendes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607c7a235ea45---4725185839.pdfIn PDF document text
    • http://jarosi.hu/files/file/2695761790.pdfIn PDF document text
    • https://congchung7.com/upload/file/mopose.pdfIn PDF document text
    • http://chinalabware.es/d/files/wobepojuwizida.pdfIn PDF document text
    • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/c5a07923e6bb0ec3c3c728e45ad0059e/38871071387.pdfIn PDF document text
    • https://twr1115.net/files/fckeditor/file/tanuvaduwelo.pdfIn PDF document text
    • https://bobecoingatlan.com/uploads/editor/file/94434702997.pdfIn PDF document text
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/8342v91tg8r7vtdmmf37igdn9c/72984826502.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/16071bf317419a---71310286337.pdfIn PDF document text
    • http://closehorses.com/userfiles/file/xovaz.pdfIn PDF document text
    • http://omegapizza.net/uploads/files/70213032672.pdfIn PDF document text
    • https://shayangroup.net/wp-content/plugins/super-forms/uploads/php/files/a7e12ea2395c7cd1f9e70e65ee1154b8/xezadilero.pdfIn PDF document text
    • http://hitecds.com/userfiles/file/bakojulama.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160829ebfa72da---1253665665.pdfIn PDF document text
    • https://aedwea.com/upload/foto/duvokal.pdfIn PDF document text
    • https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/866166d73c4c963e01a2b2eaa2e3867b/mirezodugizufovibi.pdfIn PDF document text
    • http://aps-mes.com/files/file/81909795538.pdfIn PDF document text
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/09d7b9a5bb78cd08bba42cf62159a2ee/jarexerup.pdfIn PDF document text
    • http://mineraux-et-lithotherapie.fr/ckeditor/upload/files/jopebusu.pdfIn PDF document text
    • http://falerisztika.hu/tmp/60199330847.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/n4jbq47v8k728eqhgcnc23aje5/52390981381.pdfIn PDF document text
    • https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/7784j0qaprrcdigemtti8ruvle/79914748486.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=largest+kidney+stone+passed+naturallyPDF 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_off0002837f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2837F 10832 bytes
SHA-256: 333d152c9dd21a84df76db8003138ea1cecb898b6d3ab42b73f0cee343e7ac42
font_01_sfnt_off00029c60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29C60 18256 bytes
SHA-256: 3a153c476a3f2634902e4c5d4574bc5ab5034a037b2c80e4a329a6b3838e1268
font_02_sfnt_off0002ccf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCF0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1