Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a894d41289b6545…

MALICIOUS

PDF

93.4 KB Created: 2021-07-03 21:14:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: eefd93ec6db6bb8d68d51c4e0192349f SHA-1: b1a5e422dfb4cf600e842837c2fcfb2d9e24a9f0 SHA-256: 0a894d41289b65459869c5c6e42391a0d9a46bdb5bb9d2df1c1fbcb25e834635
164 Risk Score

Malware Insights

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

This PDF file contains embedded JavaScript and a significant number of external URIs, many of which point to compromised WordPress upload directories or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a common technique for exploiting PDF vulnerabilities or redirecting users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://corumosmanlimakina.com/js/ckfinder/userfiles/files/65540669669.pdf In PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607deb6d3ce60---14246376879.pdfIn PDF document text
    • http://grandinspirations.com/clients/75274/File/zuwudimule.pdfIn PDF document text
    • https://giorgiosantinelli.it/file/50036068037.pdfIn PDF document text
    • http://nessium.fr/userfiles/file/vekudoma.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca17742eb9---64104023405.pdfIn PDF document text
    • https://educationindiajournal.org/ckfinder/userfiles/files/tumetufapuwipuwevi.pdfIn PDF document text
    • http://nikacarpet.com/My_Project/Hamishe_bahar/ahar_img/files/15548401302.pdfIn PDF document text
    • http://fhhsclassof70.com/clients/4/42/42ce21dc30e429aa976ba070b22ccf93/File/temefebepomuvumajoto.pdfIn PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160a4513f2c990---19035871528.pdfIn PDF document text
    • https://aduanaldelvalle.com/userfiles/file/nebafebojumesurawuferurem.pdfIn PDF document text
    • http://clubselectionvoyages.com/images/file/zawif.pdfIn PDF document text
    • http://bright-mineral.com/uploadfile/file/2021070101175691.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d0c643be77a---59540149015.pdfIn PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077e10894e2a---wesobajo.pdfIn PDF document text
    • https://www.plsok.com/wp-content/plugins/super-forms/uploads/php/files/468d546725c3b10668702017ae00fbad/danavafiwa.pdfIn PDF document text
    • http://asianmosaicnyc.com/userfiles/file/waxasigut.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/5gtluss20ff8ou6458fqvnovpd/duradelanavufatojevike.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/16071ca348fb9d---tibodokupibasatak.pdfIn PDF document text
    • http://spalovnachemolak.sk/userfiles/file/xilijifigakemim.pdfIn PDF document text
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/58b095529c5ce3ed185d7fd37af1e4c4/wemibifogunusabor.pdfIn PDF document text
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/3fjsn2abs7j7l8ltol667lm7ci/2033209506.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609bf59e19536---kimededutadun.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=jack+russell+dachshund+mixPDF 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_off00010b35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B35 16840 bytes
SHA-256: 52c71c9afd4e7fb680f696b0cf120f5aa3e4a1ecdcbb0e672c245f21633ddf5c
font_01_sfnt_off000136a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136A5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014ebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EBC 10700 bytes
SHA-256: 7aa7d68a5b56a082b8f06166ef2caad5f4a0bc7871a4f47e3b01924f2b665fd9

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