Malicious PDF — malware analysis report

Static analysis result for SHA-256 366fc5451a24eb07…

MALICIOUS

PDF

80.8 KB Created: 2021-09-03 11:05:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 4052bc9b8ea29b753bea612f8902a8f4 SHA-1: 6a8e623a3da838cf0bca3d4756e69f007f44b672 SHA-256: 366fc5451a24eb0762cc6f294b0cc816985dfe11c0419aca2d32c04426cee289
156 Risk Score

Malware Insights

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

The PDF contains a large number of links, many pointing to compromised CMS uploads and disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160747eed523dc---wupapediwuzosusawifu.pdf In PDF document text
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/tvt3ctdktmbk3nrcgftteraflg/dibijibasojadizifoxodiw.pdfIn PDF document text
    • http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/16123876d1781a---napiretogujobibizura.pdfIn PDF document text
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/02862c6af72ecd422bc5d69bf1abe475/papif.pdfIn PDF document text
    • https://magyar-logyogyasz.hu/fileok/file/jusegiravinorasexa.pdfIn PDF document text
    • https://aiaciran.org/cache/fck_files/file/59559566594.pdfIn PDF document text
    • http://fresh-j.info/images/uploadedimages/file/80779874153.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097b58554130---nowojukuvufokozil.pdfIn PDF document text
    • https://dhcom.vn/userfiles/file/78503068011.pdfIn PDF document text
    • http://gpe-el.pro/ckfinder/userfiles/files/60690487824.pdfIn PDF document text
    • https://jeevadhara.org/work/london/userfiles/file/95636163124.pdfIn PDF document text
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/160909bb76c3ad---72890770840.pdfIn PDF document text
    • http://agendatourvietnam.com/hinhanh/file/79400473098.pdfIn PDF document text
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f041fa014b---voxafofodikakezudivobe.pdfIn PDF document text
    • http://househouse.it/userfiles/files/gedukolawe.pdfIn PDF document text
    • http://allasclub.com/campannas/file/ruxotidemagafomudoma.pdfIn PDF document text
    • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6214baf0e23eb38cbe36ac97beef5bf9/nipovedavebonite.pdfIn PDF document text
    • http://symbioticlifetech.org/attfile/fckimg/file///202107054222_271449507.pdfIn PDF document text
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160d21fab898dd---63096706331.pdfIn PDF document text
    • https://lapiadinafelice.it/file/sujarajevunomo.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160bc73202fe13---zakebigasalulok.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=pdf+to+jpg+converter+free+download+with+crackPDF 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_off0000d791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD791 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000efa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA8 11104 bytes
SHA-256: 05fad9d4199033dcd2fc989daed2cd63aaca1a991ef02dedc0cec7d9a56d981b
font_02_sfnt_off0001094f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1094F 17124 bytes
SHA-256: 42689d4e56ffd637e405f8db152f07e56e68caa17c9443f29d4ad0059ec1cee3

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