Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9240ce0d54141d8…

MALICIOUS

PDF

89.2 KB Created: 2021-09-04 07:50:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 9d99282a2acd97c6dc94c3be400963ce SHA-1: 0e250f7e0aa552d8f5f6b5b45c98d7a5e96d5481 SHA-256: f9240ce0d54141d822b964709e05ac251cf52ee1f10f0714eaad60a7e82b1fa3
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing and potential trojan threat. The heuristics suggest it functions as a link farm, potentially luring users to download further malicious content via a fake download button and callback phishing pretext. The embedded URLs point to compromised CMS uploads and disposable hosting, increasing the likelihood of a malicious payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

Heuristics 8

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://foundryindia.org/userfiles/file/86463300158.pdf In PDF document text
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/rvub3kcj7gmb7mag0nf0vbmpm5/nuronagoze.pdfIn PDF document text
    • http://osteriailgalloelinnamorata.com/userfiles/files/23384184687.pdfIn PDF document text
    • https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/ipbmmvrokd4cs9h9ffrd8gfbeg/mapob.pdfIn PDF document text
    • http://bajcsidavidfoto.com/_user/file/wemidefomaki.pdfIn PDF document text
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160dbf0761746f---sugibuvemama.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c26c4c60aac---fezakomoze.pdfIn PDF document text
    • https://gwynharmon.com/home/gwyn/public_html/ckfinder/userfiles/files/99862236562.pdfIn PDF document text
    • http://asiavent.com/UserFiles/file///73714371356.pdfIn PDF document text
    • http://sostrevalli.it/userfiles/files/vakobuzotanime.pdfIn PDF document text
    • https://mbzgogo.xyz/web/img/podborky/files/luxagefofozixu.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb05a6f535---viwekaxexagosowilolit.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e020be4c63---sajoxixoguwa.pdfIn PDF document text
    • https://alllegaltask.com/wp-content/plugins/super-forms/uploads/php/files/bjm1h5m6i0t90uo3qiofcd5nj7/97453105151.pdfIn PDF document text
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca9753d0ae---69874744235.pdfIn PDF document text
    • http://gamebonda.com/ckupload/files/gagegijafapepujo.pdfIn PDF document text
    • http://ginzaramen.us/uploads/files/gusironuvebemimine.pdfIn PDF document text
    • http://edbiji.com/uploads/files/20210725064427_792392.pdfIn PDF document text
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160773ff769768---80493880634.pdfIn PDF document text
    • http://3gr-group-com.gbintl.com/ci/userfiles/files/lusofebejifujufedig.pdfIn PDF document text
    • http://renovfab-menuiserie.com/userfiles/file/nejobesiga.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=group+d+admit+card+2018+download+pdfPDF 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_off0000f4eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4EB 18352 bytes
SHA-256: 122234c7a5d7282a2840ca2df4d4858d3f0f56602a1fd9b707a272441d393036
font_01_sfnt_off000124a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124A1 11208 bytes
SHA-256: 6f6c94b42d31a192b174b22ba1683aafcba97b4282603bc95dd62a3df07fb400
font_02_sfnt_off00013efb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EFB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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