Malicious PDF — malware analysis report

Static analysis result for SHA-256 10e030d52f5651f5…

MALICIOUS

PDF

83.1 KB Created: 2021-08-16 00:05:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 47dd42b89a14f0218f61b79de68e32e3 SHA-1: ce938ee9fa948d7b022e2452c08919b4025b71f5 SHA-256: 10e030d52f5651f5e2f68d12eab77316d601d31792e202b253ffd3660b66e806
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious. Heuristics indicate it functions as a link farm, pointing to multiple compromised WordPress sites and disposable hosting. The embedded URLs suggest an attempt to redirect users to potentially malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://master.plus/wp-content/plugins/super-forms/uploads/php/files/7aa3da0b8ac8a950f91abe9b14c55a9a/kawetudunuwunavimo.pdf In PDF document text
    • http://bukharageorgia.com/sites/default/files/file/35705232695.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/bojajufopaxos.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5834cba656---77219492239.pdfIn PDF document text
    • http://yachtales.net/admin/userfiles/files/15695660663.pdfIn PDF document text
    • http://aimic.com/userfiles/file/xesusigatororule.pdfIn PDF document text
    • https://athensviptour.com/wp-content/plugins/super-forms/uploads/php/files/4d2d9f7055f5327595a15f5cf18d1d97/tusixudegi.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/160766b541ac33---21292658474.pdfIn PDF document text
    • https://mamap.in/ci/userfiles/files/rinaroworuladovewum.pdfIn PDF document text
    • https://www.servicioscalibrados.com/wp-content/plugins/super-forms/uploads/php/files/21181ba832dd5b0db9704fa7eb776e9e/jawolasujukimaxiv.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609e660fd91c3---73184061736.pdfIn PDF document text
    • http://robvancampen.nl/userfiles/file/rozule.pdfIn PDF document text
    • http://elementsgogreen.com/userfiles/file/nafodereluma.pdfIn PDF document text
    • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/59be7c15b9aa5ed62b99bbd7231d9213/14534711178.pdfIn PDF document text
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160944fbe1839e---91488755520.pdfIn PDF document text
    • http://pnalog.ru/images/file/23711105116.pdfIn PDF document text
    • http://xn--j1aii.su/userfiles/file/47538538094.pdfIn PDF document text
    • https://observatoire-omic.org/documents/file/36905907494.pdfIn PDF document text
    • https://www.oasipizza.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b076c76380b---60654536787.pdfIn PDF document text
    • http://princeverma.in/uploads/files/94083038423.pdfIn PDF document text
    • http://www.aqsclimited.com/EditorImages/file/2554825146.pdfIn PDF document text
    • https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/dc37867cce13f66c35ab7cf49ff7c5ee/mepupifid.pdfIn PDF document text
    • http://airelimpio.mx/img/editor/file/xezexitemulamibawisune.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=50+sombras+mas+oscuras+pelicula+completa+cinepolisPDF 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_off0000dbcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCB 18296 bytes
SHA-256: 6da677152f463459f7da864ecacddb003169003269c377098312e8c0fc81613d
font_01_sfnt_off00010a7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A7E 10936 bytes
SHA-256: df5031656fa4ab09d95332b299e3e1be1d9a7b41f63e782d17354dd3225255dd
font_02_sfnt_off0001239b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1239B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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