Malicious PDF — malware analysis report

Static analysis result for SHA-256 422e9c7085e87ad1…

MALICIOUS

PDF

63.6 KB Created: 2021-08-10 00:57:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 4ea839dee58c70ebe49ecea99f6572fe SHA-1: 0893bace6d69ca323275f933653126b81619b8cb SHA-256: 422e9c7085e87ad1d2a3bde0f9a5fd8b8531d4f79249a8e847985b08114f83e3
154 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs that point to compromised websites and disposable domains, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9465

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 https://irlanc.ru/uplcv?utm_term=j%C3%A9sus+le+christ+lumi%C3%A8re+int%C3%A9rieure+lyrics PDF link annotation
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abc0139f4b4---50476059174.pdfIn PDF document text
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/219bdd5c1084050abf54b691f75bdfca/26518083576.pdfIn PDF document text
    • http://www.saito-ken.jp/userdata/file/muvajiwifosufapabojazam.pdfIn PDF document text
    • http://m2mus.pro/clients/b/b1/b1ca46fdb12d68e762e4a8b3318caec0/File/pelawul.pdfIn PDF document text
    • http://beliangka.com/contents//files/mamesojevalewebededal.pdfIn PDF document text
    • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/08063945ca084f9dd00cdbd7be0d8ded/53342189473.pdfIn PDF document text
    • https://eghamatyab.com/basefile/bainbookcom/files/semumupivumaxovemibuxulo.pdfIn PDF document text
    • http://kezmosas.hu/files/file/vojewuwijikiludifuf.pdfIn PDF document text
    • http://progetec.org/userfiles/files/sedulitemugadumupava.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071879a30764---zilatirotewudoweti.pdfIn PDF document text
    • https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/7j6tsi6kdsop1on6599raj6ps7/fodazikobebatexova.pdfIn PDF document text
    • http://www.thaiboat.net/image/upload/File/72605554942.pdfIn PDF document text
    • https://hglobaltourb2c.com/FileData/ckfinder/files/20210618_5BEA8E88E5E576B9.pdfIn PDF document text
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606fa2f9c76e7---77261634235.pdfIn PDF document text
    • http://mulroyenvironmental.ie/userfiles/file/39327990325.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bffab7f2a14---lumijejaxarafuj.pdfIn PDF document text
    • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/3e0c95d7ecd0d9f5c68d1e8d8a7cc9a2/laguxivumikusajin.pdfIn PDF document text
    • http://geyikkimya.com/userfiles/upload/file/97957431463.pdfIn PDF document text
    • http://vuason.vn/upload/files/vomofiluxabufisodasivek.pdfIn PDF document text
    • http://dianacb.cz/userfiles/file/wuraxip.pdfIn PDF document text
    • http://zulassung4you.de/bilder/file/41090484925.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606d3ccd9c060---66874645707.pdfIn PDF document text
    • https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/35cfabfd9f09876fb1181751afec1149/8749794143.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607e6c463cfa4---7790260790.pdfIn PDF document text
    • http://ukkies.be/userfiles/file/22627270734.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC637 18656 bytes
SHA-256: 2ff6dfdd627de6fa03f8f8a2bd390315381a7121e577cf6d5f6e31b3546260f1

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