Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ccec1b2679b9701…

MALICIOUS

PDF

83.2 KB Created: 2021-06-30 19:29:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: ebc26245ca38cbb133442a0ab056ee96 SHA-1: 857c7109b571d64cd22b1147b8f732133e6aed63 SHA-256: 7ccec1b2679b970154786fac4d8385601128cca4f5d909e9ba5571b7e5d635be
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristic 'SE_CALLBACK_LURE' strongly suggests a callback phishing or tech-support scam pretext, where the document likely prompts the user to call a number. While no scripts were explicitly extracted, the PDF structure and numerous links to potentially compromised WordPress sites indicate a sophisticated phishing attempt designed to exploit user trust.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9860

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://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/e3762bebf9194f031eecda5aa112dfb1/liwipajokiguxazuz.pdf In PDF document text
    • http://minutemen-jrotc.com/clients/84940/File/13950188596.pdfIn PDF document text
    • http://ylpcl.com/ckfinder/userfiles/files/13801568767.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607b2cba9be70---xesururab.pdfIn PDF document text
    • http://futurepoolandspa.com/ckfinder/userfiles/files/65940300345.pdfIn PDF document text
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607186c572539---manisok.pdfIn PDF document text
    • http://koreaseowon.com/ckupload/files/11092933391.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/cef651cf01414b975642af98c640f67c/74203549821.pdfIn PDF document text
    • https://circolodelpistone.ch/userfiles/file/52534730567.pdfIn PDF document text
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cba06f1fb1---57478751214.pdfIn PDF document text
    • http://extracam.es/app/webroot/arxius/file/57043050591.pdfIn PDF document text
    • http://diysmart.net/userfiles/file/pekiwutujawokija.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606d18ff949b8---navikudemanevap.pdfIn PDF document text
    • https://twr1115.net/files/fckeditor/file/gekewufadoxos.pdfIn PDF document text
    • http://ligneus.hu/upload/file/4316964258.pdfIn PDF document text
    • http://www.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/16085fb621ecac---52883943910.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a9c4810b45e---xekaluduzawesijazolef.pdfIn PDF document text
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/b9hk5lnh7hv6ts9elvio440pad/36583709426.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609da761380a8---97614685381.pdfIn PDF document text
    • http://asbu.net/uploads/FCK_files/file/89160469035.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/84084209fa521cbec58e9d977c04eb6b/funelawogasabev.pdfIn PDF document text
    • https://anmimar.com/royal/userfiles/file/zipegavo.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e19c57b7ae---piporazexisabogaxunon.pdfIn PDF document text
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607dd5f7574f3---16266835202.pdfIn PDF document text
    • http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085dcb4a2bc4---33384626917.pdfIn PDF document text
    • http://dentherapia.hu/files/file/fovolotax.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=prejudice+and+discrimination+against+the+elderly+is+termedPDF 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_off0000e233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE233 11164 bytes
SHA-256: cdb27cbdd4db711df95919b03ac6f0c928848d3080e08dfd6c7b49ffab1a5e7d
font_01_sfnt_off0000fbdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000113ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113EE 16472 bytes
SHA-256: 6b73c51b5e19a099afc3fa9ee318934c586c44c1f656f3b5b9392bbe65fe50c9

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