Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcc28ac8701dce3c…

MALICIOUS

PDF

109.3 KB Created: 2021-06-25 16:50:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: c4c9e224602164d6c4b16524c0c17d6f SHA-1: 7cd3f87c880d9e60d372b1e8f9936220c3ad53cc SHA-256: bcc28ac8701dce3c0b7c02132a2de3b0d7f8f61325094267032fa23a3fb18bae
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to compromised CMS upload storage and disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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 http://scheiden-maassluis.nl/uploads//file/33939973360.pdf In PDF document text
    • https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/b4lngedg802sbntlkksl349dq6/31943306592.pdfIn PDF document text
    • https://nnkcreations.com/userfiles/file/geribebotedinasiwa.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/160739fc8b39be---68316821781.pdfIn PDF document text
    • http://ytbozhuo.com/upload/file/010322065625.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085e8530926d---buxizuputuruxoluw.pdfIn PDF document text
    • http://gidaero.com/upload/fckeditor/file/50707030537.pdfIn PDF document text
    • http://proxima-design.cz/files/file/lixawasitujukig.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097ff30dc48b.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/wigekuse.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f333fcb145---97003911006.pdfIn PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/160763c602fc5f---nagekiravusoxudewazot.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b236b887939---refoginas.pdfIn PDF document text
    • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf1f881c15d---kupaxuxobusumigo.pdfIn PDF document text
    • http://airconbank.com/upload/fckeditor/file/25937203604.pdfIn PDF document text
    • http://media-production.net/admin/ckfinder/userfiles/files/zuvefadigibodis.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609eea2a4fee1---59604332323.pdfIn PDF document text
    • http://bualuang101.com/backoffice/upload/files/betimokipezoxunemekufi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=current+affairs+of+pakistan+pdf+downloadPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00018995.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x18995 18608 bytes
SHA-256: 52bfce2a84e256087367221c131d0106d7646c185991e5bb8854a80e3fa188f3
font_00_sfnt_off0001249e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1249E 10800 bytes
SHA-256: b11f97db237dc8199a97fd2806a5a85da307b46e5f795621c96811e236112f47
font_01_sfnt_off00013db3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DB3 19596 bytes
SHA-256: 33b274a6f1e21b3182e00ac74070b79c369f5c1e594e3b7a84d3fa392a68e83a
font_02_sfnt_off00017184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17184 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.