Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e8f430d7572c8a8…

MALICIOUS

PDF

115.0 KB Created: 2021-06-27 03:07:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 5fa237e15ea9450b304d85d054854a40 SHA-1: 64bd09afa0268a60bca71fa7fff8c6b0effc4490 SHA-256: 9e8f430d7572c8a81a8e31d0771318761f41f11af132ee925b5bde76aa766683
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to compromised CMS uploads or disposable hosting, indicating a link farm designed to lure users to malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. No scripts were extracted, and the document body was unreadable, but the URL patterns and heuristic firings are sufficient to assess the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9885

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 https://huntic.ru/uplcv?utm_term=download+if+loving+you+is+wrong+season+6 PDF link annotation
    • http://plafondchauffant.fr//img/user/file/21761810038.pdfIn PDF document text
    • https://alibabaoman.com/basefile/alibabaomancom/files/5616481929.pdfIn PDF document text
    • http://duocmyphamcongty.com/app/webroot/uploads/files/jivusujizito.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609657a8060b2---getuwukoris.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a27e3d4bcd7---4413737027.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/92rt1qrgpqjagvhapf023omt8e/nasiwow.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4077bb428d---17116791118.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/bnu051jj9bo7ge2tgidg8ef6s2/dowutawukogamumixe.pdfIn PDF document text
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/fe5f4428380905d5a1ad829e0fac2048/lojitegufator.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16079485a6d109---49912725170.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071a82a7f8f3---5483976460.pdfIn PDF document text
    • http://sbox-technology.com/upload/datoteke/30423084026.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/8c7a24a5e60cfb04f5c50c77c78d0fa8/99345402272.pdfIn PDF document text
    • https://j-kowalewski.pl/uploads/userfiles/files/viwobenebekozuwasavenep.pdfIn PDF document text
    • https://triosms.com/userfiles/file/zuvofuvusutuvomo.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/14fc9c90da340abb9197948abd06ebd6/40007206615.pdfIn PDF document text
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/b653190e29f1b42e561993cb191e9fdb/41657999543.pdfIn PDF document text
    • http://cdmatik.com/uploads/file/tasalugixebuvebozuba.pdfIn PDF document text
    • http://fuga-hotel.com/CKEdit/upload/files/21762134161.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160ae77083c7a1---83996709497.pdfIn PDF document text
    • https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/9896306fb1b539e4fe7d546dc2421a32/75497657305.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c40bd4e6523---84712915539.pdfIn PDF document text
    • http://aedelsur.com/contenido/files/wusal.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001423e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1423E 17112 bytes
SHA-256: 885b9024a80bd539ee88f4c17c1e1fa3cc6dab475ff5b740ebf17c73a317c9ed
font_01_sfnt_off00015b25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B25 10964 bytes
SHA-256: a06659eabd8d18ef7fcfab690eda79727dbed638a5d8f6a9ba0f7a0d35ca5615
font_02_sfnt_off00017494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17494 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00018ca6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18CA6 18108 bytes
SHA-256: 9238ccd3d178137a78949fced7513184846797eb4d6660320f9d9b879ca02be6