Malicious PDF — malware analysis report

Static analysis result for SHA-256 e062bb4fcc2d8c50…

MALICIOUS

PDF

86.7 KB Created: 2021-09-21 00:38:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 7cac632bb21c2cbc8a6803c4655bef55 SHA-1: f4f151c2be4c3590bd57b0ff9b289f8de6095e26 SHA-256: e062bb4fcc2d8c50907ca6983821df436b4f913a8a1c3c6c82bc7419756319c8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://archism.ru/uplcv?utm_term=android+1+dino+water+world PDF link annotation
    • http://scoutpate.com/userfiles/file/88482481426.pdfIn PDF document text
    • http://podushka.by/files/files/15166282503.pdfIn PDF document text
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/73dd5067b710c7ca8b8d6480e1566c79/94916776409.pdfIn PDF document text
    • http://rudolphi.nu/userfiles/file/74953828930.pdfIn PDF document text
    • http://onlinepravenconsultant.com/uploads/wysiwyg/files/golebatozogimuj.pdfIn PDF document text
    • https://holycrosshealthcare.com/userfiles/files/sirugawozeletujeretuzilo.pdfIn PDF document text
    • http://bagiez.de/userfiles/file/nuvazutefudizewa.pdfIn PDF document text
    • http://hizirferforje.com/admin/fckeditor/editor/images/file/44747329054.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16136effa9f1bb---pujadizanuv.pdfIn PDF document text
    • http://navigator-nsk.ru/userfiles/file/4021320187.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141082d81913---52986133778.pdfIn PDF document text
    • http://marta-galan.com/files/varios/file/gobosojelaxuxefa.pdfIn PDF document text
    • http://partner-support.net/user_data/userfiles/files/nedulonumi.pdfIn PDF document text
    • https://newsru.md/upload/userfiles/files/42383099396.pdfIn PDF document text
    • https://sts-cct.com/app/webroot/userfiles/files/29344348740.pdfIn PDF document text
    • http://quantri.thaisonpalacehotel.com/upload/files/99088275616.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614652b97c579---11136607948.pdfIn PDF document text
    • https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/hdp0psq7u3b5jg7ja3f986ibnb/37766181996.pdfIn PDF document text
    • http://www.civilhospitalpalampur.in/img/uploads/files/81003594125.pdfIn PDF document text
    • https://eastmangroupllc.net/ckfinder/userfiles/files/milovugufekis.pdfIn PDF document text
    • http://jayeonrak.com/upfile_editor/2021/files/55128327782.pdfIn PDF document text
    • http://ktcyy.com/ckfinder/userfiles/files/bapisiforaduji.pdfIn PDF document text
    • https://queensflower.nl/clientfiles/88479294277.pdfIn PDF document text
    • https://o2opr.co/userfiles/files/jamuz.pdfIn PDF document text
    • http://billsky.ee/files/file/79351479724.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD293 16148 bytes
SHA-256: b17e3c388ca520c70044df51a505a8c8de3d1ca9b2e495c629779bc8d31aca59
font_01_sfnt_off0000e822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE822 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10039 10192 bytes
SHA-256: 6b80143e3cebe1d0f4c478592a6a2ba2e2dd132d7be6c3b732d2ed0cc3261232
font_03_sfnt_off00011738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11738 20296 bytes
SHA-256: 884c2c2ccbacfee59feac884349ef98be6291248970d15b4b125a4b95dde3b6f

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