Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f705d4bb0cb1799…

MALICIOUS

PDF

80.1 KB Created: 2021-09-06 01:53:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: cf82f159d59f4ebea6b34f403e2c1bd3 SHA-1: ce09518a35c8dd6b43799c98618b257504a7b731 SHA-256: 2f705d4bb0cb1799031f40474df48b92b2cd6c0506a40f3171641dfea4c50924
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as a malicious PDF by ClamAV and an ML classifier. It contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to redirect users to potentially malicious content. The presence of these links suggests an attempt to exploit users through deceptive redirection, aligning with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8d6ed942d3---58234882536.pdf In PDF document text
    • https://baruipur.org/ckfinder/userfiles/files/lovuvanibeniko.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f06a73850b---guzubak.pdfIn PDF document text
    • http://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607b58b65934a---mixigixisinavov.pdfIn PDF document text
    • https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/ugt41j0jm75heo9h8p507ru9da/likuxakefo.pdfIn PDF document text
    • https://store-connector.com/_upload_bilder/_filemanager/file/79002889205.pdfIn PDF document text
    • http://www.onlinetemsilci.com/wp-content/plugins/formcraft/file-upload/server/content/files/160761f7906049---karowapevirajom.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9c9f09f3f---90405695483.pdfIn PDF document text
    • http://odpadykj.cz/UserFiles/File/5737463941.pdfIn PDF document text
    • http://graylegalservices.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/gukopopabavufupapag.pdfIn PDF document text
    • http://rafaelokazakov.com/file/felaruvosexujenaxelu.pdfIn PDF document text
    • http://creative-format.com/upload/editor/files/481464033.pdfIn PDF document text
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/530cf94be9067a3ba9048ba248314882/73719404551.pdfIn PDF document text
    • https://gbp.dropship-online.com/userfiles/files/dodabixujimikug.pdfIn PDF document text
    • https://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/8cseeqp43js2fj8845pkqsaa53/xoragemisilel.pdfIn PDF document text
    • http://bruisedreedfoundation.org/clients/4/4d/4d9d7eec3bf3a09fa0457ace138f6a4e/File/74997590361.pdfIn PDF document text
    • http://opersan.com/file/mufivapebavo.pdfIn PDF document text
    • http://billagelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/rezimuxexubabalugejorul.pdfIn PDF document text
    • http://ikhmongol.mn/ckfinder/userfiles/files/numuta.pdfIn PDF document text
    • https://magnettoptan.com/upload/ckfinder/files/ginidukoratapi.pdfIn PDF document text
    • https://daotaolaixesontay.com/uploads/file/88659391739.pdfIn PDF document text
    • http://thermogroup.ru/uploads/files/fazalobojozetegigijibi.pdfIn PDF document text
    • https://corpeverest.com/ckfinder/userfiles/files/sajofimojenekomogar.pdfIn PDF document text
    • http://clerus.hu/files/file/56598191763.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=jspdf+autotable+line+break+not+workingPDF 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_off0000d256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD256 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ea6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA6D 11084 bytes
SHA-256: 1b47735561614d988e441e66b3785172eeb2d5d37d6fe4787bdb8959120e8982
font_02_sfnt_off00010400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10400 17728 bytes
SHA-256: 4d1f84892e136e1c8c9b2c635ccdc5d09069130869bdf5d36268dc541b019fed

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