Malicious PDF — malware analysis report

Static analysis result for SHA-256 34e26596b1e3da84…

MALICIOUS

PDF

87.6 KB Created: 2021-09-01 17:52:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: b8f56653242dfa3388fe432277a439e3 SHA-1: 3fa90c73884a5262eaa8257903982c8f8e6be7e7 SHA-256: 34e26596b1e3da84271fd377ef740d8aa56b601ff0a09845c1f69b64e590b736
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a link farm pointing to numerous external URLs, many hosted on compromised CMS uploads, suggesting a phishing or malware distribution scheme. The presence of embedded URLs and the nature of the heuristics strongly suggest the PDF is intended to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 https://wastran.ru/uplcv?utm_term=the+duchess+with+an+empty+soul+novel PDF link annotation
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1609e349dcc29c---zilituwi.pdfIn PDF document text
    • https://jurad.eu/files/file/doxusut.pdfIn PDF document text
    • https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/81f970727928a2372fd23769ec2b0029/99928059196.pdfIn PDF document text
    • http://udmvdpo.ru/images/files/velunovalelano.pdfIn PDF document text
    • https://aquamedicasatumare.ro/ckfinder/userfiles/files/dubifelavivopuxafaw.pdfIn PDF document text
    • http://diysmart.net/userfiles/file/gagexolimunavoxejidogav.pdfIn PDF document text
    • http://lbhodgereunion.com/clients/3/38/38e1f81cb1ac74d12d86c8ba87866b9f/File/54139100458.pdfIn PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f50957c356---lipiwim.pdfIn PDF document text
    • http://asijskepotraviny.cz/files/file/bamoxapi.pdfIn PDF document text
    • http://ajtoablakcentrum.com/_user/file/89521576812.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/uodc71085hbch3ot7c1a0a8l47/tugeno.pdfIn PDF document text
    • http://akkoryazilim.com/userfiles/file/18170081284.pdfIn PDF document text
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/1608a5e819095a---wijikukisafunedew.pdfIn PDF document text
    • http://urbanconstructions.org/images/uploadedimages/file/nezaziraje.pdfIn PDF document text
    • http://nextgt.eu/uploads/file/20434096498.pdfIn PDF document text
    • https://sitebyside.ru/wp-content/plugins/super-forms/uploads/php/files/ea6aa900c6958d8bab343345183bacd5/rozanak.pdfIn PDF document text
    • https://starbox.fr/img/files/kisiwokarotunupu.pdfIn PDF document text
    • http://hondatayho.vn/images/ckeditor/files/nojigelore.pdfIn PDF document text
    • https://eownauto.com/uploadpic/files/37842745833.pdfIn PDF document text
    • http://radio-salsa.com/php/rs/filesupload/file/lovigaj.pdfIn PDF document text
    • http://farashimirooz.com/files/61245121969.pdfIn PDF document text
    • https://btsis.com/upload/ckfinder/files/68746406099.pdfIn PDF document text
    • http://portaldo.eu/contenuti/upload/file/73160872306.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/16085a26caf22f---zopesuko.pdfIn PDF document text
    • https://alexandrapanayotou.com/web/images/static/file/40351253119.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_off0000e2f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fb0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB0E 11008 bytes
SHA-256: 4992f3d4a5442db32e0b8922630d362cb385035dbd778d46af1bd98b28087345
font_02_sfnt_off00011482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11482 22020 bytes
SHA-256: 1c4aa08b192a3413241880c4347d70e2719c9ea584b762ac8e88c49de7b6be5a

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