Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba9029d6243c1ce9…

MALICIOUS

PDF

163.8 KB Created: 2021-05-07 23:09:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f4b5a906ce855c98f36c27448185046 SHA-1: 965966577534ea5ccb300cf339200e23df235b1d SHA-256: ba9029d6243c1ce92a987a77a8a9d6683d9b17a281db8637b41ba0ae1ed00c67
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution campaign. The embedded URLs likely lead to a second-stage payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 https://allytemp.ru/uplcv?utm_term=enhanced+lccap+guidebook+3
    • https://reflexlighting.com/wp-content/plugins/super-forms/uploads/php/files/8872f8a7634a9ae6128fd2f65e6832a6/8269621208.pdf
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094405b8da9c---vefisijalomikadip.pdf
    • https://archltginc.com/wp-content/plugins/super-forms/uploads/php/files/5c2c09f7fbc1c108e73fd971918aca83/89692879378.pdf
    • http://aliglobshop.com/userfiles/file/91389936816.pdf
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/160775c0773f26---jurako.pdf
    • https://www.azembay.com/wp-content/plugins/super-forms/uploads/php/files/01rvo5vu0e5d3emg67dgtcpevm/87733608394.pdf
    • https://ensasoft.com.tr/wp-content/plugins/super-forms/uploads/php/files/vslqfm8uuseu6hf603hedbrskl/85125170917.pdf
    • http://apexhealthnutrition.com/newerac2c/userfiles/file/53677030882.pdf
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606d12e690f78---15915602881.pdf
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607d9c2919418---88973675397.pdf
    • https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/16832572688cb7cfc0910b000e74f763/zukebipezawoluve.pdf
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1608515c99a456---50743824217.pdf
    • https://www.proctoloji.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073578478d4b---mugotofovegere.pdf
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160943a42d459c---58195659319.pdf
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/0fded530a15516e538065e429447e3f6/kidiz.pdf
    • https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/2725bc8b0f974621ea38e8117bcb2e8e/daxareguwuwituja.pdf
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160848699b4122---47357074055.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002388f.bin
693470ba343554c7d6bf34f68c9811c9a44ef3bdd08946a5f4fbfe6306d6485f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2388F 5388 bytes
font_01_sfnt_off00024ae0.bin
39408476e7a31d0574a3b7b87dbcbb3ae56c8b860b62053cda418f14cd2d4b60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24AE0 11760 bytes
font_02_sfnt_off00027299.bin
2173a1880e9f774f759393e7d0d28dda91d04d8a3eae6bea41b822770b343b90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27299 16060 bytes

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