Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec5d5306b6b3eab1…

MALICIOUS

PDF

95.5 KB Created: 2021-08-08 20:46:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 2fa50332b8f8c3808b29b31d85edcc10 SHA-1: bdfdc601924bebc72aadf139d20c70e690f6343a SHA-256: ec5d5306b6b3eab14ed85937f715a76c29b5665b2fa65cea79fc105805a83f9b
156 Risk Score

Malware Insights

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

The file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs that point to potentially compromised websites or disposable hosting, likely to lure users into downloading malware or engaging in phishing activities. The presence of a URL with 'utm_term=weird+science+full+movie+download+in+hindi+480p' suggests a lure for pirated content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4a62bd1ac2---10863556787.pdf In PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608b455ba33a8---darogi.pdfIn PDF document text
    • https://groupunsur1.com/contents//files/lidopasat.pdfIn PDF document text
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/002da80927f86f8482ecb7fec280c656/dakevovita.pdfIn PDF document text
    • https://agrimal.pl/userfiles/file/sojelivomezoro.pdfIn PDF document text
    • http://casinodanmarkjackpot.dk/userfiles/file/wazimoguxaluluvusexuzelu.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a30dc2bbce9---38127050575.pdfIn PDF document text
    • http://camel-republic.com/media/userfiles/files/14754715164.pdfIn PDF document text
    • https://www.zolmedis.lt/ckfinder/userfiles/files/komarapivawurupibetove.pdfIn PDF document text
    • http://ntweac.edu.hk/admin/ckfinder/userfiles/files/kedozoxunew.pdfIn PDF document text
    • https://vongtaytramhuong.vn/upload/files/9205626389.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/mapeniverujixofejorakof.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160abca946a6cb---juzamelizetozesajuwokirid.pdfIn PDF document text
    • https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/3f93a6b60549d1cf95399fda449c6566/pimugusasukuratulixalow.pdfIn PDF document text
    • http://malagi.pl/user-files/fck/file/pononanotolevubu.pdfIn PDF document text
    • https://aartipalette.com/userfiles/file/xatoralidoregolupobov.pdfIn PDF document text
    • https://www.schroedersales.com/wp-content/plugins/super-forms/uploads/php/files/e142a862a5e460f704fb182e5f89c1dd/64705739443.pdfIn PDF document text
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/kdohb9f68hrdjcttuujh7p9fq8/90125469663.pdfIn PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/160b298463d914---josejodipewavujirete.pdfIn PDF document text
    • http://suamayin.biz/userfiles/file/pirovigelojoratod.pdfIn PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/2dfbba9b36f495283158a0a830ec888f/27048780659.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=weird+science+full+movie+download+in+hindi+480pPDF 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_off00010ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF5 11440 bytes
SHA-256: 94490ec22d7cfc186e9fcfacc583a4c1f4a6af07fb97d4d673551052f07d6195
font_01_sfnt_off00012ad9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AD9 17336 bytes
SHA-256: e4be23f4c7c4c41e90feb431a86efead295d26919a8e9e526fb2fdb419eddbf9
font_02_sfnt_off000157f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x157F7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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