Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d7ab0ce5c0e69f0…

MALICIOUS

PDF

88.5 KB Created: 2021-08-02 20:14:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 2fca59bd4c24234bf23a1af456633c16 SHA-1: 43528dc95e4c825c3f6d36ac47be3d67ba72e8b0 SHA-256: 2d7ab0ce5c0e69f0526568f589eb2b98801b8a6f81dd76002ff45e19eafc9da2
236 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged by multiple heuristics and a machine learning classifier as malicious. It contains numerous links to external sites, some hosted on compromised WordPress installations, and includes instructions to disable security software and handle a password-protected archive. These elements strongly suggest a phishing or malware delivery attempt, likely involving a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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://irlanc.ru/uplcv?utm_term=all+spd+frp+remove+fastboot+tool+download PDF link annotation
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bf846f96d35---56150903203.pdfIn PDF document text
    • http://ekbdrive.ru/ckfinder/userfiles/files/16840901244.pdfIn PDF document text
    • http://thuexe7cho.vn/upload/files/41889539589.pdfIn PDF document text
    • http://coronado1977.com/clients/54390/File/14599012688.pdfIn PDF document text
    • http://bitite.lv/media/txt/122/file/xiranuxarin.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/1v770a5dbeoiqe6u3o318nt9g1/suveberudisobuzefavix.pdfIn PDF document text
    • http://quick-thailand.com/images/uploads/file/vosudaxemopozojuf.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/1609e4ba67a91b---nuzewafanekipisum.pdfIn PDF document text
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/16099652de1aff---52698292972.pdfIn PDF document text
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/214548ebc28304ceb4a6a9b49ff43f85/80834730420.pdfIn PDF document text
    • http://harc-ias.vn/Images_upload/files/83406943518.pdfIn PDF document text
    • http://tahi.hu/ckfinder/userfiles/files/pexukunefinoda.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bf3be2935c3---54905180951.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090962b44530---29445297488.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6a260d96f5---76707099958.pdfIn PDF document text
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160844f6b91ae3---fudev.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/ifspannbh270smalebgktbh821/30375350823.pdfIn PDF document text
    • http://ascensionchina.com/userfiles/file/11193240044.pdfIn PDF document text
    • http://gma.ge/admin/ckeditor/ckfinder/userfiles/files/98701542185.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a896356cbe9---niguwov.pdfIn PDF document text
    • http://abwingssuffolk1.com/uploads/files/90791090828.pdfIn PDF document text
    • http://ahsaipu.com/v15/Upload/file/2021511831257479.pdfIn PDF document text
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/b366e99b6c08a7773d428cbd7ba171ea/kenapaj.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_off0000f4b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B7 10840 bytes
SHA-256: 505c5a860dce56a93d81936d1c9c18d2e5541965ed4eef22493329c2dbbee5e7
font_01_sfnt_off00010d9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D9D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000125af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125AF 17436 bytes
SHA-256: a2744e24ba399f5b89da1affcc5169a32986017309c024abef53be3ffd5c205c

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