Malicious PDF — malware analysis report

Static analysis result for SHA-256 34c417dc0dc67da4…

MALICIOUS

PDF

86.2 KB Created: 2021-09-03 14:17:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 4929eb77648b24ba597565fbf09022e3 SHA-1: cc406f14b2316b6b092268dd0fdbf57103bade53 SHA-256: 34c417dc0dc67da4d4e2d42751fc3e0064ec6666fb87037af1869ada773b1090
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document, potentially leveraging embedded JavaScript for redirection or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://smidgel.ru/uplcv?utm_term=o+totemismo+hoje+pdf PDF link annotation
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160748fc5b1e2d---barewofun.pdfIn PDF document text
    • http://realloans.com/clients/73966/File/turamujesive.pdfIn PDF document text
    • https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/815bb64ed75fa4e13ebc51c71bc16aef/15463330562.pdfIn PDF document text
    • https://creativenursery.net/home/creative/public_html/ckfinder/userfiles/files/riribonukalar.pdfIn PDF document text
    • http://wksystems.net/HotelEstimator/userfiles/file/23030345372.pdfIn PDF document text
    • https://okna-kurska.ru/page_edit/_samples/userfiles/files/deweripapilu.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5ee184f439---kalemedudisusufidawekufe.pdfIn PDF document text
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609fe8ffdf5f4---movokadowutaxeriluru.pdfIn PDF document text
    • https://eminencesolutions.in/resources/userfiles/file/fafumosugapule.pdfIn PDF document text
    • http://seksdagen.nl/userfiles/file/dizozujaranom.pdfIn PDF document text
    • https://sportsht.com/userfiles/file/14827542099.pdfIn PDF document text
    • http://hondasushi.com/uploads/files/25085830771.pdfIn PDF document text
    • http://booklandbooks.com/userfiles/file/xedexazupadufamoga.pdfIn PDF document text
    • http://ahdongjiu.com/upload_fck/file/2021-5-15/20210515085505460630.pdfIn PDF document text
    • http://daiichilogistics.com/uploads/news_file/76851742133.pdfIn PDF document text
    • http://seventyfirstclassof69.com/clients/60772/File/kirulinevozuvibajidexe.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/1500e5e3fe740454943d793e06aa1594/13779272460.pdfIn PDF document text
    • http://qlinairnv.be/userfiles/file/90401763917.pdfIn PDF document text
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/51f56f4e93a86c052037c6c19759e25b/xevurolamalejixisigiv.pdfIn PDF document text
    • http://kidsjeodo.com/images/files/nidinejukumix.pdfIn PDF document text
    • https://cevhertemizlik.com/userfiles/files/40971910440.pdfIn PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/3d56830ed9b8012f7015599df38cd04e/zikizijijagubedokelosudur.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_off0000e723.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE723 20888 bytes
SHA-256: 90737a740202a8c6df46bf7ec466fbdaf563475c5169ac904a4098a56ba7702c
font_01_sfnt_off00011b43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B43 10508 bytes
SHA-256: 4685a533102086f65287a7994a647e0288eaf3bc240521436a50e39dfdb51849
font_02_sfnt_off00013327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13327 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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