Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cb4c4a250ec4d85…

MALICIOUS

PDF

78.0 KB Created: 2021-09-15 20:27:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 7d2f1cbd64e8011761591423a3398ca8 SHA-1: 7e8db45eb647b493fe24dfca6cedc83c1dd9ae48 SHA-256: 2cb4c4a250ec4d85ec311f102f1bb21abef3ae31915631e829e086fd210d73c8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, presenting numerous URLs that point to external resources, many of which are hosted on domains associated with compromised CMS uploads or disposable hosting. This pattern is commonly used to distribute phishing content or redirect users to exploit kits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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 http://packturf.fr/files/66745803853.pdf In PDF document text
    • http://chatfieldfarms101.com/userimages/funet.pdfIn PDF document text
    • http://skmsm.com/userData/board/file/59615530079.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614176b5a8885---mijejolo.pdfIn PDF document text
    • http://tubelessons.net/cms_images/file/nidal.pdfIn PDF document text
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/161411467aa9fc---vizefebi.pdfIn PDF document text
    • http://www.corazondelsol.es/ckfinder/userfiles/files/52250808472.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133f5080d093---19323988920.pdfIn PDF document text
    • http://physocare.com/Images_upload/files/musirurevesibugoxigom.pdfIn PDF document text
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/8bdcac2cc7763a6b8b511bcf8608c067/gogezixab.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161368c305af6f---9568782923.pdfIn PDF document text
    • https://alistairmills.com/ckfinder/userfiles/files/86658050696.pdfIn PDF document text
    • https://tractorpulling-emmeloord.nl/upload/file/58998311472.pdfIn PDF document text
    • http://www.galiantsolutions.com/emailimages/file/13935339482.pdfIn PDF document text
    • http://bayernglobal.de/userVZ/file/52127109437.pdfIn PDF document text
    • https://mimpiindah168.com/contents/files/54155408023.pdfIn PDF document text
    • http://unseretochter.com/images/file/73972271958.pdfIn PDF document text
    • https://eclearusa.com/images/file/roborurujajatelevojorap.pdfIn PDF document text
    • http://baove247.org/upload/files/zijezinuwa.pdfIn PDF document text
    • http://imoroz.by/upload/file/70524269559.pdfIn PDF document text
    • http://bluebirdcanada.com/FileData/ckfinder/files/20210908_730604BF343BEDFC.pdfIn PDF document text
    • http://camel-republic.com/media/userfiles/files/59930908211.pdfIn PDF document text
    • http://bibliotekaszamocin.pl/img/upload/files/pasumuvipubamerozavijul.pdfIn PDF document text
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/7350c5dcaa4fcf035b919bb4044c432b/pigugofu.pdfIn PDF document text
    • http://psystems.gr/Administrator/uploads/userpics/OutPostImages/files/nenida.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=los+ojos+de+mi+princesa+descargar+pdfPDF 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_off0000c32c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC32C 14592 bytes
SHA-256: ed85ce640a3a9f3b8b347b8e27c6953647943eb1f0717f49e31e855ee50df369
font_01_sfnt_off0000e700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE700 17344 bytes
SHA-256: af184adfa8c7c890c202cf465b0bcef6e9d1a3dcb773cecb3905fb3850129ff7
font_02_sfnt_off000111d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111D5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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