Malicious PDF — malware analysis report

Static analysis result for SHA-256 18d75c02b1e64bc8…

MALICIOUS

PDF

74.7 KB Created: 2021-09-04 03:37:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 65771bcde87e0fc4323a775292f6d4a8 SHA-1: f2879dd0c3f8073c293678414b3098219d6ef321 SHA-256: 18d75c02b1e64bc88e7bfcba9800a8b46bd9ca481a8ecd6eb5e6d2ecc075c186
176 Risk Score

Malware Insights

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

This PDF document is classified as malicious by ML models and ClamAV, indicating a phishing or trojan threat. The heuristic 'SE_CALLBACK_LURE' strongly suggests the document is designed to trick the user into calling a fraudulent support number, likely for a scam. The numerous embedded URLs pointing to compromised CMS uploads and disposable hosting further support its role as a lure or part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://garglob.ru/uplcv?utm_term=competing+with+giants+pdf+download PDF link annotation
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160834459c9dd7---57691597965.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160afe38bd5f6d---jixazezet.pdfIn PDF document text
    • https://blsautomation.com/ckfinder/userfiles/files/kowaz.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f16daf87a54---66679409997.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/71137b31e35cdb452edd3fbdb14df381/xunuzepesebezivubi.pdfIn PDF document text
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a13ef7def93---63651753660.pdfIn PDF document text
    • http://tdvvietnam.vn/webroot/img/files/25512043036.pdfIn PDF document text
    • https://harteron.ee/userfiles/file/71844306500.pdfIn PDF document text
    • http://federicozucchettiarchitetto.eu/userfiles/files/kukosikivexututebawago.pdfIn PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/b9c0b1ac43d079104cdeb0277a9c4243/35280903039.pdfIn PDF document text
    • https://irantruck.ir/data/file/45298885217.pdfIn PDF document text
    • http://parejalecaros.com/adjunto/upload/fck/files/5620043362.pdfIn PDF document text
    • https://dbmotorbrokers.com/userfiles/file/89248957947.pdfIn PDF document text
    • https://plasy.com/uploads/file/fudunaribodebagu.pdfIn PDF document text
    • http://donaldbermanmaimonidesgolf2021.com/clients/0/0d/0d43fbb8ff91cab41fa1b056c0d912a9/File/75214388875.pdfIn PDF document text
    • http://hzqljsj.com/images/upload/File/weterubajojurubolegixu.pdfIn PDF document text
    • https://girilawfirm.com/content_files/files/namigagos.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/7e846d2e2331584124badd571fd14760/tofatume.pdfIn PDF document text
    • http://okeefesreef.com/ckfinder/userfiles/files/labeboxejavifelafevawiw.pdfIn PDF document text
    • https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/2fe471e16623107e57e0e47afe9d5e6c/numalaropifelinevu.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/1d02d7af6a8f152c2e80566a2337db45/33824534598.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/a3a01a3325a2e2ef6844abff881ca61a/nivenogobuzomevu.pdfIn PDF document text
    • http://mariamozharova.ru/uploads/files/fuselogexuzapisi.pdfIn PDF document text
    • 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_off0000c03b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC03B 17572 bytes
SHA-256: eb7098b7ed429d71ee51157802dad27cb75d7c84275194b9e48bf028e050013d
font_01_sfnt_off0000ec75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC75 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001048c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1048C 10964 bytes
SHA-256: 6513fcef51bca774ee3d3939294479bb05aaf843feeb6c5d98b28ff66c7d0899

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