Malicious PDF — malware analysis report

Static analysis result for SHA-256 2af6968ba25415fc…

MALICIOUS

PDF

93.8 KB Created: 2021-06-25 19:45:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 52bcda9632cad289c530c38589c1a2be SHA-1: 3dd9fa84af23d06cbc056eefe39247c036e3c378 SHA-256: 2af6968ba25415fcefdbb45fffe545aef50a165b9ae87c31983277867223e06d
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document is designed to trick users into providing a password for an archive, likely to conceal a malicious payload. Numerous URLs pointing to compromised WordPress sites and disposable hosting were extracted, indicating a link farm used for distributing further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://pistant.ru/uplcv?utm_term=d+link+dsl+2680+manuale+italiano PDF link annotation
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/nl1qdbg5mrghtlqvf3pn7jrtpo/75249772076.pdfIn PDF document text
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/1609ba2ff1acef---faxodekevumomox.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8c2bb9f999---38324791023.pdfIn PDF document text
    • https://carstenrath.com/wp-content/plugins/super-forms/uploads/php/files/io2ruoeojp6dgfm5o8eigocae2/71439572920.pdfIn PDF document text
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/08514faa0c0afeb0668a3db7caed7be7/80840332765.pdfIn PDF document text
    • https://boucherienabli.com/uploads/FCK_files/file/66478318653.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/16078ccefcf3f9---jiludelejize.pdfIn PDF document text
    • https://lawpropertyconsultants.co.uk/wp-content/plugins/super-forms/uploads/php/files/rqk2pchjpaokiprssra9gkivst/muwejopifezu.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/e2940691343c9fc1eb2f33af528eb461/21383639194.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/e6kkoaf2h8mj5gljjheefg9lk6/fawerepipobo.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/d3e76d5d1231b43e8b1a94338327c3f6/begoramiratuzarak.pdfIn PDF document text
    • http://gintaras.cz/userfiles/file/munomenenilomimuzizodasab.pdfIn PDF document text
    • http://ifa-astrologie.de/userfiles/file/7409684252.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210507081044386.pdfIn PDF document text
    • http://brandiassociati.it/userfiles/file/tepovezitem.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/3pn5m3f6cek4ag7hl74k74kd03/posil.pdfIn PDF document text
    • http://mmdplus.com/userfiles/files/20210601_223023.pdfIn PDF document text
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/4c87dd518b681295642bcd20e167d3f3/70872282398.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160798cba5d160---364002186.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/lgc26m39biuh673f0rnu7720q0/24620767146.pdfIn PDF document text
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/f33c560ad8cc08449c6d3ef4baf0c15b/teseniredokefedatireme.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca13c34ebb---88133215422.pdfIn PDF document text
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/0f9c5d651b093a9a2ae6c81d358f8a4a/tapujesapo.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_off0001093e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1093E 11120 bytes
SHA-256: 3b729829416d45bf67d526251761ec55a05e8569e47ee8dc970fa3ca4c71e99b
font_01_sfnt_off0001233b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1233B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013b4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B4D 18152 bytes
SHA-256: 7abe8e1f8489d9620150e2cdb194c9a864f8d96d9cb2061f653ea513c98f1993

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