Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6a6709a754db21e…

MALICIOUS

PDF

84.7 KB Created: 2021-06-26 04:46:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1e92b9140b3ecbee670d4a4f30f18649 SHA-1: 6edb6f7126e2b2447e341bc684d8696c9ec59865 SHA-256: d6a6709a754db21ef9db4b654e68c81ff975d2674dfe661a023c3d9d9f7b6b9b
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised websites and disposable hosting, suggesting a phishing or malware distribution campaign. The presence of external URI heuristics and link farm patterns further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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 http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/0fada3b16250fd1ae09a2f138e218456/91364781917.pdf
    • http://goreskyreunion.com/clients/b/ba/ba087d28c24afe6c5bc45fa062332e47/File/rawezaneme.pdf
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/d4120c41bfac3af2f4dd62983225b9a0/27173219259.pdf
    • http://www.trafikyaren.com/wp-content/plugins/super-forms/uploads/php/files/q4k433sgo7tv0m1n4uherlbgm2/sasibufujigite.pdf
    • http://co-mit.com/uploads/files/wizorofira.pdf
    • http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607a7219480ae---1293244211.pdf
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160959b797d42b---82891684736.pdf
    • https://lastcallslc.com/wp-content/plugins/super-forms/uploads/php/files/80b7be97e02308727839d24cc49cc442/jiwavolapuwatelemopepebe.pdf
    • https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/ca7b84d4a3958120a198e89ac81f1df4/putabawabotatal.pdf
    • https://gachbinhduong.com/upload/file/17965187960.pdf
    • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609210b2527a8---85213206849.pdf
    • http://drironcat.com/images/file/vusub.pdf
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160bcee25d381e---zoberefesadipus.pdf
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/iold7bpdmgpmqgg4s0cg9kj39n/vofajajedijuxaveritajano.pdf
    • https://www.bistro-e.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607537d6aa342---nutir.pdf
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae0028a4dbe---nigopirevik.pdf
    • https://baohohoanglong.com/userfiles/file/fomokiloxumibovepefede.pdf
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/5cbc8f8205cdd4c040b04d47c0970006/vowuwarinowimesapuvozopew.pdf
    • http://szao-spb.ru/images/news/file/jufoxulejewuxirok.pdf
    • http://braciszewska-klimek.pl/fck_files/file/pamuzij.pdf
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/1608769c36b44c---27291629951.pdf
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c1e9b98200d---piguwezaxemozufupus.pdf
    • http://www.asap-recruitment.net/upload/file/pebuzupimamojaj.pdf
    • http://reicar.dk/userfiles/file/84328294790.pdf
    • http://adance0112.com/upfile/editor/file/16067865904.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=exfat+bootable+usb
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e99e.bin
197e307559243f7312893f102f58435c8394e6fdf8d5e9727618d5944dec27c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE99E 17060 bytes
font_01_sfnt_off00011642.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11642 16792 bytes
font_02_sfnt_off00012e59.bin
66d94e49f375732a9e52876ff90aa5ac498979641803f8ac2309a1e0c585b6e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E59 10236 bytes

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