Malicious PDF — malware analysis report

Static analysis result for SHA-256 180a505362a1f4cb…

MALICIOUS

PDF

80.0 KB Created: 2021-06-17 17:33:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 4716af0ab8aecd98c24cac59eab4c735 SHA-1: 94049c08396af8832130af9530f8f1b86544cd05 SHA-256: 180a505362a1f4cbf2df4b24864fee5a19de9f7569fddd3041806eac48b8fea3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs that form a link farm, with many pointing to compromised WordPress sites. The ClamAV detection and ML classifier indicate malicious intent, likely to redirect users to phishing pages or download further malware. No scripts were extracted, but the structure and URL patterns are strongly indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6896

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://nomylo.ru/uplcv?utm_term=doregama+telugu+a+to+z PDF link annotation
    • https://maugli24.ru/wp-content/plugins/super-forms/uploads/php/files/2cd3cba36304ee66d3269709e6c9e5e9/tigiwajegubo.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/7835fj633705l5jtmuq9h5ro4d/87752036322.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2368254f65---xuvelir.pdfIn PDF document text
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/psath8geo8cfh4tncoadgcjp0u/54199927693.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a160bcf363d---71071097641.pdfIn PDF document text
    • https://tonitomov.com/picture/file/2340612005.pdfIn PDF document text
    • https://nikoljski.com/ckfinder/userfiles/files/pejugevijotavog.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/4b8a331733a1662ab2c5d2958c4204e3/81021762595.pdfIn PDF document text
    • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097ed54c2cbb---15225889228.pdfIn PDF document text
    • http://alituncer.com/userfiles/file/rojavofevetipanafojad.pdfIn PDF document text
    • https://soechi.net/userfiles/file/15116062219.pdfIn PDF document text
    • http://basaritarim.net/admin/editor_resim/file/11223259419.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/1607193bc1b80b---35237858500.pdfIn PDF document text
    • http://albatrossmrn.com/konadnew/userfiles/file/xapagowerudumofe.pdfIn PDF document text
    • http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ac0f2a7ce3---84646715365.pdfIn PDF document text
    • https://fuchscars.com/wp-content/plugins/super-forms/uploads/php/files/32abebcd6caa8e98970e947e948eb080/53280251255.pdfIn PDF document text
    • https://almoheetmanpower.com/public_html/userfiles/file/44946059534.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10322 4604 bytes
SHA-256: 71e1f1d16cf2cc588feb331e853be7392a340a7cb2e8317a624b760546c3e0b5
font_01_sfnt_off000112dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112DC 11796 bytes
SHA-256: bd6e4588f1af29fedf951c384bd86bb4841d67d64cc70b76357adaa495ae0bd4

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