Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ce92dc28842aebc…

MALICIOUS

PDF

83.9 KB Created: 2021-10-05 09:18:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 501e5b890a156b740911b4aa14e543c2 SHA-1: 01e6d73acba6e8821fb05371b3db89858b05532d SHA-256: 0ce92dc28842aebc705c32d202a3c22e844fa230b5a338a45531a325dc4eea17
176 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. The heuristics reveal it functions as a link farm, directing users to compromised WordPress upload storage and other disposable hosting sites. The document's structure and embedded URLs suggest a phishing or callback scam, aiming to trick users into visiting malicious sites. No scripts were extracted, but the overall pattern points to a malicious document designed to exploit user trust.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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.
  • 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.
  • 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://mtmnetwork.net/uploadEditor/files/96410877671.pdf In PDF document text
    • http://www.loicadesacavem.pt/wp-content/plugins/formcraft/file-upload/server/content/files/161333d2ca8167---71284174923.pdfIn PDF document text
    • https://worldpigment.com/image/upload/File/69816866974.pdfIn PDF document text
    • https://dnm.tw/uploads/files/202109282356066614.pdfIn PDF document text
    • http://www.introspekta.si/ckfinder/ckeditor_uploaded_files/files/bulepifovenaru.pdfIn PDF document text
    • http://heatherjansch.com/ckfinder/userfiles/files/36889509636.pdfIn PDF document text
    • http://herium.net/FileData/ckfinder/files/20210906_48DE6F9D6B345E36.pdfIn PDF document text
    • https://www.cascatai.com.br/ckfinder/userfiles/files/64091926961.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/16141bb4fe798e---22025309790.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/799d2980dc70ce538dd37c9d0ac646a1/ramuvelukodiweteni.pdfIn PDF document text
    • http://graviroz.hu/ckfinder/userfiles/files/pifesadixofokijiror.pdfIn PDF document text
    • http://cbcom.fr/ressource/site-image/files/85826334185.pdfIn PDF document text
    • http://nsk-nalogov.net/upload/files/16315342611.pdfIn PDF document text
    • http://enovosti.info/ckfinder/userfiles/files/dezirotonulavoxezi.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/161583a7637470---8664460169.pdfIn PDF document text
    • http://geotersrl.it/file/88954376072.pdfIn PDF document text
    • https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/24tvnjv3ci5gml479va05kslr8/74967929536.pdfIn PDF document text
    • http://dycelife.com/userfiles/file/39659738530.pdfIn PDF document text
    • http://hzxgdz.com/images/upload/File/7706664171.pdfIn PDF document text
    • https://www.dogandemir.av.tr/paketler/ckfinder/dosyalar/files/70447809064.pdfIn PDF document text
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/16153e16bc2061---68180761953.pdfIn PDF document text
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/161515a6ca26f6---68894794922.pdfIn PDF document text
    • https://cosplay-expo.it/ckfinder/userfiles/files/98704230511.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=coconut+oil+producing+countriesPDF 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_off0000e40c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE40C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fc1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC1E 17780 bytes
SHA-256: 2b9fb6a9691066c8dbd79186c34c74edd00ab53b9cef2935b00706ea11573ca7
font_02_sfnt_off000129c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129C0 10660 bytes
SHA-256: 6d2d90334a71560971b6749ec4a39d0d5b34f5bde6ba0f92a7758eac0fd424f5

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