Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e76cc213f3676de…

MALICIOUS

PDF

88.6 KB Created: 2021-07-21 05:51:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 264a758fa6f8c23fefe28ba0b3363b09 SHA-1: acc510caeb3017ca46848962edeca2227391c5a5 SHA-256: 3e76cc213f3676dec9ba4687f975190e6d1a1a743fee2e915743e35ee3d54363
156 Risk Score

Malware Insights

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

The PDF contains a link farm directing to multiple external URLs, many of which are hosted on compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The document body is heavily obfuscated and does not provide direct clues to its purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

Heuristics 6

  • 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.
  • 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://traveletrust.com/basefile/traveletrustcom/files/50579425961.pdf In PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/h73ca5libec2ul47q0tjtt204e/21014884681.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bee9c69aba---46328845218.pdfIn PDF document text
    • https://landi-bg.com/images/file/goxeroxaginetamusilile.pdfIn PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/160984155e8cd1---motiwosotunijogovoz.pdfIn PDF document text
    • http://bobas24.pl/Upload/file/bezatazawed.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b1f91d5f42a---timevasirezugovoxinexupa.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608eb3dadeae7---zemujil.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b9ed271c224---guwosopibunujuxodiwixat.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/aa52a974736f7f4a4b76bfcb1348a697/21187086660.pdfIn PDF document text
    • https://artbynela.com/uploads/file/22126680156.pdfIn PDF document text
    • http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb1e63ef9f---3030180868.pdfIn PDF document text
    • https://autoskola-scp.com/files/67209033452.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1607953c0d7d7c---27805885412.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2689507523---80964437867.pdfIn PDF document text
    • https://prestinieurope.ch/userfiles/files/87400117590.pdfIn PDF document text
    • http://vimbark.sk/editor_uploads/files/lasemeki.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/0kr8rgs0opvreuqcogq0q53lmg/74126406514.pdfIn PDF document text
    • https://salvatoredivilio.it/userfiles/file/4342090613.pdfIn PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/f762cbfffa8dea7f8773ee2b40737743/mafewivagosegufexeg.pdfIn PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/hsaqsa6v93obbdok578n8g0plr/79599355687.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=daily+puzzle+wordscape+todayPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f866.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF866 10764 bytes
SHA-256: 8781dc8a817d3bd562d8d470c728222cfa714bca1c0cfe0930ca66805c3ed91c
font_01_sfnt_off0001116c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1116C 16840 bytes
SHA-256: 319e619b170f7d94dc383cb197365cdd389b6d26c50860fa61c241410b957ce9
font_02_sfnt_off00013d53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D53 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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