Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bee623b1b9e9e00…

MALICIOUS

PDF

143.1 KB Created: 2021-06-21 00:46:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c59beee2b9fda05086fe67a136dceee6 SHA-1: d448b8645e0d9e2fdeae12ea5faccd9d0710c741 SHA-256: 7bee623b1b9e9e00e5cd0654241591384eb8f9629437c037588c15b6ca1f566d
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. The document contains numerous external URIs and link farm patterns, suggesting an intent to redirect users to potentially harmful websites. The presence of compromised CMS upload links further supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://ketchas.ru/uplcv?utm_term=surah+kahf+bangla+meaning PDF link annotation
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/56a6edc1208374398cb41cfabb8df6be/zajokomiz.pdfIn PDF document text
    • https://atcotourismtravel.com/userfiles/file/86376952657.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/d49a70d1d85ed237776a4710ccc9b08f/92609301884.pdfIn PDF document text
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ae514874a3c---28499072228.pdfIn PDF document text
    • http://fontanarosaserigrafia.it/userfiles/file/zidubosituxitebemowafilal.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/b9ce5a511f4cf072e63d5068c7d001d6/65113538989.pdfIn PDF document text
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/73b8a1e451754ec78787508b84611673/kejopimenomujidekid.pdfIn PDF document text
    • http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/160a358d4aaf76---benexaxufeg.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2ef44a1cea.pdfIn PDF document text
    • http://www.doctor-carpet.com/wp-content/plugins/super-forms/uploads/php/files/2ussv1qj2828slibdj0ptn2tu7/dudibixizevofev.pdfIn PDF document text
    • http://nirmalapublicschoolerumely.com/userfiles/file/10313998971.pdfIn PDF document text
    • https://earplighting.com/wp-content/plugins/super-forms/uploads/php/files/69a35bc0fa24af380fc67820ab4675e0/rejaw.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/9539b9799da07512213025f95a87e342/55919431304.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/337496789c0e76f12e722405d24d78a8/xopuzadiradasezujal.pdfIn PDF document text
    • http://clubselectionvoyages.com/images/file/kodifoxemidokuf.pdfIn PDF document text
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/s9kjrh9e740ithket7v2aa1809/koropominuxowijekoxi.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac9eacbff7e---66788028930.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0001f4cf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1F4CF 32224 bytes
SHA-256: 8add9e9b5dd314b253f7b36fd8aa151990f8f7564996da7b9f0f8c9c1c71884e
font_00_sfnt_off00017ddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17DDB 5308 bytes
SHA-256: 9ccfdacc0c93ce8ef43cfab1e88e21d283753dcf6a3eeedbf9240112a0ae8aed
font_01_sfnt_off00018fc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18FC4 23492 bytes
SHA-256: a051dfbdb597639cf8d8bde55b6d52bd3f5892fa740d0df820fabbb28e914660
font_02_sfnt_off0001cd17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CD17 12128 bytes
SHA-256: cb92654d53078a65efab401f74b98c396ac606ff0a4817d54db8799d54361003

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