Malicious PDF — malware analysis report

Static analysis result for SHA-256 14dc258dd66adf8e…

MALICIOUS

PDF

85.1 KB Created: 2021-09-21 00:29:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: cd8d150a8be67ec719a9dbc762063510 SHA-1: 63e5c6742b273008b5cb61de3ed11c454e92d31d SHA-256: 14dc258dd66adf8ef1f951052ef57c5569e2ce6b6a94d71f2fd3c9ab5b37730f
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a link farm pointing to compromised WordPress sites, suggesting an attempt to trick users into downloading malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The presence of external URIs and link farms on compromised CMS uploads points to a distribution mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 8

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://wastran.ru/uplcv?utm_term=dus+kahaniyaan+full+movie+download PDF link annotation
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613257c077c33---bavijesiwokufujigagupeso.pdfIn PDF document text
    • http://cctechlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/60431079610.pdfIn PDF document text
    • https://bibliotheque.ville.deux-montagnes.qc.ca/ckfinder/userfiles/files/95320539951.pdfIn PDF document text
    • http://omegapizza.net/uploads/files/budefidid.pdfIn PDF document text
    • https://gaadalagi.com/contents/files/dojoxuzelutuzetivasovop.pdfIn PDF document text
    • http://zezoalza.com/ckupload/files/89425651955.pdfIn PDF document text
    • http://2rent.gr/userfiles/file/tegomefaronukosesamiget.pdfIn PDF document text
    • https://frutalmente.pt/site/upload/file/36183198857.pdfIn PDF document text
    • https://wasael.com/userfiles/file/3328009239.pdfIn PDF document text
    • http://locthanhroyal.com/upload/files/bogigepow.pdfIn PDF document text
    • https://chulintemple.house-well.com/CKEdit/upload/files/25925189923.pdfIn PDF document text
    • https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16131658c20521---32242907073.pdfIn PDF document text
    • http://luberoff.com/userfiles/file/85466043209.pdfIn PDF document text
    • http://nfraccon.org/userfiles/file/jetubarupajup.pdfIn PDF document text
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/161404fcb7b1c2---tupubawurilamekixexajalu.pdfIn PDF document text
    • https://groupekheidri.com/ckfinder/userfiles/files/39335375950.pdfIn PDF document text
    • https://www.colegiodomus.com.br/js/ckfinder/userfiles/files/42393374528.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16134cd9d8d7c6---92574476654.pdfIn PDF document text
    • https://uudanbury.life/files/file/papometuwuxuvamumamiwo.pdfIn PDF document text
    • http://adams-gold.ru/archive/image/file/dagederejalidiraxamugin.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/8d2d136058582c08e9ec25e57cab759b/kavuxemimab.pdfIn PDF document text
    • http://tienphat.vn/imagesflashupload/file/wituge.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/16148fa1e731ce---65800785644.pdfIn PDF document text
    • 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_off0000e866.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE866 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001007d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1007D 10880 bytes
SHA-256: ab184c258e397630f19e7709ea5b1c6231f8c4f7780f2b6c391ebd2f1fc63b60
font_02_sfnt_off0001197d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1197D 17256 bytes
SHA-256: 802610a91cb16d33949e7d1f99760e41653353560ae9afbf03be7d6cf6dc088d

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