Malicious PDF — malware analysis report

Static analysis result for SHA-256 d00ba741b053400e…

MALICIOUS

PDF

85.9 KB Created: 2021-09-06 06:17:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 11ac92b9fe90cec801b7b927f301eecb SHA-1: 4bfe66e4015aa223f321d2df2368db9215cf115e SHA-256: d00ba741b053400eaa25d17b81fb5ac45ddd9287c93bb2f758b63065c4e3b6dd
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, presenting numerous URLs that point to potentially compromised websites or disposable hosting, likely intended to lure users into downloading further malware or engaging in phishing activities. The presence of multiple distinct hosts and the use of 'utm_term' parameters suggest an attempt to leverage SEO for malicious distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6949

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://csodamalom.hu/files/files/70950065993.pdf In PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610d4cd64a5bb---bumekawaduvig.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6dc7aca11023bbd7c1197445bdb07140/52295465184.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608dad045556b---70416936385.pdfIn PDF document text
    • https://varida-tech.com/ckfinder/userfiles/files/27157644596.pdfIn PDF document text
    • https://driftwoodcc.com/userfiles/files/bekedutatomonizenifo.pdfIn PDF document text
    • http://usateatop.com/_upload/files/58695175516.pdfIn PDF document text
    • https://www.engltg.com/wp-content/plugins/super-forms/uploads/php/files/86d98d2eb29a6c661c28fc13c01cb62d/18835577716.pdfIn PDF document text
    • http://drapa-technika.cz/UserFiles/File/jukobulamuvave.pdfIn PDF document text
    • http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608462b34cce7---25811160205.pdfIn PDF document text
    • http://chrisdepanneservices.com/Sites/cds/files/wuzom.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3459b42f72---bodofirisaz.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf54f6254f---wugexifanogarivobikixawep.pdfIn PDF document text
    • http://lenosada.sk/editor_uploads/files/97354103193.pdfIn PDF document text
    • http://galluccifaibano.com/userfiles/file/lowuzepalenawisol.pdfIn PDF document text
    • http://fundacjahfg.pl/upload/file/5161874249.pdfIn PDF document text
    • http://daehwa.info/uploaded/file/1090912364.pdfIn PDF document text
    • http://harposwebdesign.nl/app/webroot/files/userfiles/files/luwepovogo.pdfIn PDF document text
    • http://tai-group.com/upload/files/nubuwizomidofi.pdfIn PDF document text
    • https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/42ed5d93677ba77ce977c40a160ae2b4/tetovamidit.pdfIn PDF document text
    • https://implant-drill.com/userfiles/file/36569698812.pdfIn PDF document text
    • http://dribblebar.pl/userfiles/file/66369627407.pdfIn PDF document text
    • https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/2kr0di0l32aqaihomv59no865a/muzilifewaner.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=hashimoto+protocol+wentz+pdfPDF link annotation
    • 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_off00014466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14466 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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