Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d09cdfd624e63d4…

MALICIOUS

PDF

75.9 KB Created: 2021-09-09 20:56:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 2ff078fe03839e5816f329f29b598e45 SHA-1: 9da6840ee1ab305b41de17e26d764c4fc4d7c8a5 SHA-256: 3d09cdfd624e63d4232b3c4d568bbeb49fd3d428b9feb4e5a027516834c21d85
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is designed to host numerous links on disposable domains, likely to distribute malware or conduct phishing. While no scripts were directly extracted, the PDF structure and embedded URLs point towards an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://marta-galan.com/files/varios/file/24381312643.pdf In PDF document text
    • http://kelkenaghshband.com/app/webroot/img/files/37770022389.pdfIn PDF document text
    • http://jawarakreasi.com/file/3112266309.pdfIn PDF document text
    • http://dfwarbitrator.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/xipudopepozazer.pdfIn PDF document text
    • http://alacarte-husum.de/userfiles/file/vuxisivekorerazu.pdfIn PDF document text
    • http://6nergy.fr/6nergy/sites/default/user/file/savibewakawijuzetusojed.pdfIn PDF document text
    • https://havilahbuilders.com/userfiles/file/lonixup.pdfIn PDF document text
    • http://ssteelelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/papinorimefumurizazaz.pdfIn PDF document text
    • http://mbeautyconcept.com/upload/content_images/file/70793614362.pdfIn PDF document text
    • http://divorcefinance.nl/uploads/file/35580326244.pdfIn PDF document text
    • http://achilleferolla.it/userfiles/files/4084832974.pdfIn PDF document text
    • https://comobrew.com/newsite/images/user_uploads/file/kagerokim.pdfIn PDF document text
    • https://megashina24.ru/files/files/zazalemo.pdfIn PDF document text
    • https://equipelec.fr/ckfinder/userfiles/files/37504767740.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/161336e14260db---mufatorum.pdfIn PDF document text
    • https://cicadit.ro/UserFiles/file/1832022498.pdfIn PDF document text
    • http://alarm.pl/userfiles/file/52490538736.pdfIn PDF document text
    • http://ipost.mn/ckfinder/userfiles/files/zobabevekedor.pdfIn PDF document text
    • https://turkihale.com/userfiles/file/In PDF document text
    • http://zoscm.zohukum.com/ckfinder/userfiles/files/50519300212.pdfIn PDF document text
    • http://szjwwj.com/userfiles/file///fabapo.pdfIn PDF document text
    • http://bettaletroom.com/file_media/file_image/file/87045360443.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=download+pokemon+medallion+battle+mod+apkPDF 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_off0000c4ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4AD 10604 bytes
SHA-256: c53f8a219a9665b55cd8eb4b18bcf256b6521243beb19be59ad3297175bbc561
font_01_sfnt_off0000dca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f4ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4BA 17872 bytes
SHA-256: 85afc0f0039a50e11b1537ae4d21d6727fdbb073ad70afe33c4d640ce1c1bff0

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