Malicious PDF — malware analysis report

Static analysis result for SHA-256 e674ed69574ef4a1…

MALICIOUS

PDF

87.2 KB Created: 2021-09-23 19:48:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: d89a618178b1b09bb569418eac3a8950 SHA-1: d6b4db7d56c4e3d4370cc120a1b7be882ab2748a SHA-256: e674ed69574ef4a13466ad5ee032bd21538f24b69e27489c6d567b31c84dd97f
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1055 Process Injection

The file was detected by ClamAV as Pdf.Phishing.Trojan. Static analysis revealed numerous embedded URLs, many pointing to compromised WordPress sites and an IP address, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the ClamAV detection strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.1617

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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
  • 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://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f02ae9880a---28648695123.pdf In PDF document text
    • http://sieuthihatgiong.vn/webroot/img/files/61271976112.pdfIn PDF document text
    • https://mmgrowersg.com/ckfinder/userfiles/files/91855976172.pdfIn PDF document text
    • http://www.louisianarebarcontractor.com/editorimg/file/16266271863.pdfIn PDF document text
    • http://officegate.biz/admin/fck_upload/file/favuvemujolew.pdfIn PDF document text
    • http://canavesiobruno-architetti.it/userfiles/files/muruwazofukakeniwadinos.pdfIn PDF document text
    • http://giaexploring.it/userfiles/files/10759695761.pdfIn PDF document text
    • http://gist.adrianlechowicz.pl/userfiles/file/21381729098.pdfIn PDF document text
    • http://140.121.180.103/ckfinder/userfiles/files/65162859887.pdfPDF link annotation
    • http://sial.pl/galeria/file/vinezufafazavusaximaj.pdfIn PDF document text
    • http://mariondhuique-mayer.com/data/file/41880784456.pdfIn PDF document text
    • http://banglenhospital.com/UserFiles/File/3147363683.pdfIn PDF document text
    • http://fasson.vip/images/editor/files/13025519708.pdfIn PDF document text
    • http://hrt-foto.hu/_user/file/nulajufe.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e0f7faa0a2---ridarojunu.pdfIn PDF document text
    • https://locktactyuma.com/userfiles/file/fewujaze.pdfIn PDF document text
    • http://auksozvynas.lt/userfiles/file/vunizunoler.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/87a62557c7838e3041e70544e333ae92/xijej.pdfIn PDF document text
    • https://simbhaolipower.com/images/file/rifixov.pdfIn PDF document text
    • https://thietbigas.net/media/files/34734804190.pdfIn PDF document text
    • http://njxinbell.com/upload/files/legamivor.pdfIn PDF document text
    • http://abwmechanicsville.com/uploads/files/67678490906.pdfIn PDF document text
    • http://guidesdugrandlarge.fr/images/import/file/rabesuvetoxisusifo.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/1612edeb58ad10---gikizajag.pdfIn PDF document text
    • http://www.hydro-tg.pro/upload/file/91355650906.pdfIn PDF document text
    • https://we-plus.tw/ckfinder/userfiles/files/telorogorojapim.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=fifty+shades+of+grey+novel+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000102f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F6 10932 bytes
SHA-256: c196a01b03e9a4b824899d2b8b95ef743173c75d78782e548c87b8d5686f1b09
font_01_sfnt_off00011bfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BFE 18248 bytes
SHA-256: e58f7663b6b194a9c7eefc51eb6d949ceed7a083efd96cdb3532106f49ec4e97