Malicious PDF — malware analysis report

Static analysis result for SHA-256 00d3cbefcc559ae9…

MALICIOUS

PDF

62.5 KB Created: 2021-10-15 22:34:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 157243fb906fe6b8a36da8a25111e7cb SHA-1: 4b1527f74f81aa099bdb7fc0c0bd231b66ed7c58 SHA-256: 00d3cbefcc559ae93ba76eab1182d2d148fe5aae3be3c07ccc6ab72fdb02f6d2
132 Risk Score

Malware Insights

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

The sample contains embedded JavaScript, a common technique for executing malicious code within PDFs. It also features a large number of external URIs, many pointing to disposable domains, suggesting a link farm designed to obscure the ultimate destination. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8387

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://burragebrothers.org/demo/jolie/beta/userfiles/files/nebat.pdf In PDF document text
    • https://www.disbel.es/ckfinder/userfiles/files/25208058160.pdfIn PDF document text
    • http://foto-klub.dk/userfiles/file/geziz.pdfIn PDF document text
    • http://allamericannursing.com/userfiles/file/sabajurebitezej.pdfIn PDF document text
    • http://xn----7sbab1bcaqplb0ccyi9d.xn--p1ai/files/file/41023243617.pdfIn PDF document text
    • http://sea-cruise.ru/ckfinder/userfiles/files/27270555777.pdfIn PDF document text
    • https://jv-cms.crazy-jessie.nl/uploads/files/9106488204.pdfIn PDF document text
    • https://mudrun.com/home/mud/public_html/ckfinder/userfiles/files/wenilutujuzuj.pdfIn PDF document text
    • https://www.travelknowhowscotland.co.uk/assets/js/ckfinder/userfiles/files/5227862249.pdfIn PDF document text
    • https://sukaunited4d.vip/contents/files/35549616581.pdfIn PDF document text
    • https://classoft.ro/userfiles/file/natifesirutidas.pdfIn PDF document text
    • https://highlander-inn.com/assets/userfiles/files/nufujoroza.pdfIn PDF document text
    • https://2winit.com/Files/files/58701726780.pdfIn PDF document text
    • http://wannawwannie.pl/userfiles/file/pufujedisa.pdfIn PDF document text
    • https://jmcoverseaspvtltd.com/uploads/files/28780081801.pdfIn PDF document text
    • http://chuabenhxuongkhop24h.com/images/files/15823357363.pdfIn PDF document text
    • https://crawfordpoint-ca.seeninherd.com/files/85154480046.pdfIn PDF document text
    • http://inbond-cn.com/userfiles/file/85241044200.pdfIn PDF document text
    • https://fleseriuassociates.ro/files/file/jofodak.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/1614b19953b79a---16109087430.pdfIn PDF document text
    • http://bestofbeer.ru/ckfinder/userfiles/files/kegolajobu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/xPAns0MRe5M/uplcv?utm_term=how+can+i+boost+my+snap+scorePDF 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_off0000d26e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD26E 17820 bytes
SHA-256: bf823d8f0bc6725d2ddac86fcdb7a7f9ba1abb2d52fd9dc220a1f660322bdd68

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