Malicious PDF — malware analysis report

Static analysis result for SHA-256 7218e8d607d86099…

MALICIOUS

PDF

98.9 KB Created: 2021-09-01 20:03:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 984c4aba5e36a53d39aefa45d7bf0c95 SHA-1: 5fc2986693261456c39b43a6626d1b94919f6a97 SHA-256: 7218e8d607d860994707ec64fc4d09f1242ed7fb8ce7e22357fd7301e3e9caa2
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a link farm pointing to multiple websites, some of which appear to be compromised CMS uploads, suggesting an attempt to host malicious content. The presence of a 'download button' heuristic further supports the lure of downloading a payload. The ML classifier strongly indicated maliciousness, and the overall structure suggests a downloader or exploit delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 6

  • 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.
  • 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://deitratech.com/userfiles/file/tukulizitapogoxurewifefo.pdf In PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/2r22u045cc5gfeb0f0gq69nd00/5967379786.pdfIn PDF document text
    • http://veterina-hrib.cz/user-uploads/files/tututub.pdfIn PDF document text
    • http://nandeestationery.com/userfiles/files/23736842536.pdfIn PDF document text
    • https://akproauto.net/nbloom/fckuploads/file/kevojekamisuzomuzuwotelum.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/161052f4e3088e---60298338827.pdfIn PDF document text
    • http://coimbra.hu/uploads/ckfinder/userfiles/files/90916921105.pdfIn PDF document text
    • https://www.latentoac.com/portal/wp-content/plugins/super-forms/uploads/php/files/pb3ijj4skcsunl8e4aoo9rojc7/35686992100.pdfIn PDF document text
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607b87f1b3d5c---ruwesival.pdfIn PDF document text
    • http://chandigarhdatarecovery.com/files/file/zumifibuneguziduv.pdfIn PDF document text
    • http://dui-antidote.com/images/userfiles/file/bepotetanoderolobinufanu.pdfIn PDF document text
    • http://gesht.ru/admin/ckfinder/userfiles/files/91450104495.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161127743f0577---pusodojoruj.pdfIn PDF document text
    • http://zeci.nl/im/image/lujupajavugejaket.pdfIn PDF document text
    • https://macauroommate.com/ckfinder/userfiles/files/xitugamum.pdfIn PDF document text
    • http://hgbs.de/userfiles/file/79024708813.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/160862712426e9---46748895192.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160944b799c108---67758593498.pdfIn PDF document text
    • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/75af4e9f273fb3b682771f4db9e82733/likedafurilamazuje.pdfIn PDF document text
    • http://madmojo.com/fckupload/file/moxetepipixejusotatib.pdfIn PDF document text
    • http://ahs1966.net/clients/f/f9/f93f52488d971b5f2372adc2bdb16541/File/94869274718.pdfIn PDF document text
    • http://hotararicedo.ro/files/files/gexava.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16125ae56d6848---sodewitasekamugo.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/gf3225oaqd6se2elcnpp5mpt8f/68529537709.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=fasting+16+hours+dailyPDF 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_off00011f2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F2A 17444 bytes
SHA-256: d7b0daed59a9658b51a294c6f9cb0d59fda1e109b93c50912e92ec30e757bafb
font_01_sfnt_off00014c4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C4D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00016464.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16464 10808 bytes
SHA-256: 919421d603dc357199ca170437b9fde43d537017902d3cfc58ecb43602be4a05

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