Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bebcd2e8d38f594…

MALICIOUS

PDF

86.6 KB Created: 2021-07-25 14:15:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: cc0131a5287e2fefc294ff5782f7780f SHA-1: 52c66495c9322a61983cac89125436de6b144ac0 SHA-256: 4bebcd2e8d38f594aaab8598402a184d4101b890b7b75a277940d7659d48ae28
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code. The file also hosts a link farm pointing to compromised WordPress upload storage and disposable hosting, suggesting an attempt to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9904

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://landpas.pl/upload/file/27999088812.pdf In PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608b79e7398bf---49767979931.pdfIn PDF document text
    • http://zdrowejaja.com/Upload/file/44134461696.pdfIn PDF document text
    • http://aps-mes.com/files/file/85616267801.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/e170dd1fe1da60cc52419ac23ab451f2/darolimojasozowedizuk.pdfIn PDF document text
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/1607f6a6a6b0fb---sadabofizufoxekavepirupo.pdfIn PDF document text
    • http://cnokorea.com/userfiles/file/46406955496.pdfIn PDF document text
    • http://saamfactory.com/wp-content/plugins/super-forms/uploads/php/files/5b598852da9cae901291f37c9c6f6e95/74565446993.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/882e83a24hs1vbijitmmnchl32/fetupunasaz.pdfIn PDF document text
    • http://toyotaprius-custom.com/js/upload/files/84166014342.pdfIn PDF document text
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/bv9bc8lc3c3o9ep2ahc3c3su4u/19038751413.pdfIn PDF document text
    • http://villa-carlshorst.de/sites/default/files/file/6717542243.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/160756e047efeb---86738696665.pdfIn PDF document text
    • http://tatishev.ru/admin/ckfinder/userfiles/files/88212936565.pdfIn PDF document text
    • http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099f994c0f37---bagenogofupavufinewov.pdfIn PDF document text
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/91fc7f478d89a340da2aceda67f9061b/vupaxo.pdfIn PDF document text
    • http://bafiti.com/sklep/userfiles/file/46352215189.pdfIn PDF document text
    • http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7a4cd8840---96211959572.pdfIn PDF document text
    • http://arunimaflavours.com/userfiles/file/tugewanozixoz.pdfIn PDF document text
    • http://akinmedical.com/uploads/file/36222027197.pdfIn PDF document text
    • http://standdominica.org/files/files/22166605974.pdfIn PDF document text
    • http://dawahcity.com/userfiles/file/26557446528.pdfIn PDF document text
    • http://goldmustang.ru/files/files/soguben.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/5f162b8be9fe301442ced9317e0068da/bixixusokawofa.pdfIn PDF document text
    • https://avistravel.ro/userfiles/file/21058713389.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160ac932207ddd---41235974902.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=how+to+do+a+non+conformance+reportPDF 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_off0000f02e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02E 10552 bytes
SHA-256: a7f912d4c893d77f48ec049dd5fbc9645aecb650693590a7fbc495f3316fd3f8
font_01_sfnt_off00010836.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10836 16524 bytes
SHA-256: a3e1cc22e5aafc6fa896785d0bf3986e4fccc253c22daaf2fa678efb1658aada
font_02_sfnt_off000132d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132D0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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