Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e902897cf4f2088…

MALICIOUS

PDF

74.2 KB Created: 2021-06-20 14:18:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 5ad9c6c30419e852c53c69df48e1f675 SHA-1: d8e9b7f0183247bbf8b1d5b2523aa1f757a852ec SHA-256: 2e902897cf4f2088d9fef125b60b73d79b16de0361fdfb2c0f98180ba0dbdcfc
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites and disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the structure and URL patterns are consistent with a malicious PDF dropper.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9308

Heuristics 5

  • 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
  • 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://aunay-sous-auneau.fr/ckfinder/userfiles/files/giwutogu.pdf In PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/aa3807bca8aaa83af671d6ba1331a8b2/1126719312.pdfIn PDF document text
    • https://www.eoluk.com/wp-content/plugins/super-forms/uploads/php/files/i0edp78n00h7ubgrskru4u412n/37511623563.pdfIn PDF document text
    • https://www.northwoodmedical.ca/wp-content/plugins/super-forms/uploads/php/files/odb6hsp8hm5nvip85hvrulbvht/fesaketegezuroxamatebo.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607e63e468934---vubewopig.pdfIn PDF document text
    • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/pgcblckeu2pchbvkm1l409die6/jogami.pdfIn PDF document text
    • https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/molbs2pdv445srvcphu0hb42gi/3037241808.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/1607a91dc4fc7c---3313215846.pdfIn PDF document text
    • http://galettedesrois.hu/userfiles/file/bozasukogijuziwarikifulum.pdfIn PDF document text
    • http://aroma--style.net/files/files/20773707570.pdfIn PDF document text
    • https://mides.vn/images/ckeditor/files/bedemuwexis.pdfIn PDF document text
    • https://dm288.com/slicice/file/rofupim.pdfIn PDF document text
    • https://residenciasanamaro.es/userfiles/files/xoditari.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/0220f0e21a28434b06e021389ff867af/meliv.pdfIn PDF document text
    • http://xboxheerlen.nl/userfiles/file/gururazavaw.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16090c5d4dc104---mesamotelelebun.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=essential+english+words+pdf+free+downloadPDF link annotation
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B8 5352 bytes
SHA-256: 96106f837538ee73ec5a3718dbebab334c554f42d9f0af1dd00c5d433fa213a2
font_01_sfnt_off00010afd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AFD 10424 bytes
SHA-256: 4b585b48c56c0feda50bbaf55cf8dfd6c81454fd31f48d4629048ce7cee88dc8

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