Malicious PDF — malware analysis report

Static analysis result for SHA-256 fce05af991056826…

MALICIOUS

PDF

61.2 KB Created: 2021-09-18 09:26:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 06d8a3e5fb645d05f2fedbf46b20288e SHA-1: 6fe473b633e1503bf93beb71725d1fb2e1bcf245 SHA-256: fce05af9910568269ebec8316773d0c0075a8a413a8959fadae06c077b1e2fab
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by multiple heuristics, including a critical ClamAV detection for Pdf.Phishing.Trojan. The presence of numerous external URIs and a link farm on disposable hosting indicates a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest malicious intent, likely involving the exploitation of PDF vulnerabilities or social engineering to trick users into downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7260

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://vietsinphar.com/uploads/files/15390003503.pdf In PDF document text
    • https://gizaviation.com/uploads/files/mojaxilobexazuxo.pdfIn PDF document text
    • http://kovacsoltvaskerites.hu/images/file/sozizurojabumimoti.pdfIn PDF document text
    • https://cooperspick.com/files/52999153645.pdfIn PDF document text
    • https://btegypt.com/file/99591315290.pdfIn PDF document text
    • https://drrajanmahtani.com/userfiles/files/73266770473.pdfIn PDF document text
    • https://olivierdaulte.com/ckfinder/userfiles/files/gufawanu.pdfIn PDF document text
    • https://perfecthospital.net/ckfinder/userfiles/files/pajubujepeluwegug.pdfIn PDF document text
    • https://www.loisirs-auto-occasion.fr/ckfinder/userfiles/files/42183615678.pdfIn PDF document text
    • http://dlastudenta.org/Upload/file/36774762191.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/161304f57565b5---lubenanoxo.pdfIn PDF document text
    • https://xn--80aaijzh9b.xn--90ae/documents/file/movubokunotolonebos.pdfIn PDF document text
    • http://locthanhroyal.com/upload/files/32800846315.pdfIn PDF document text
    • http://ph-easycome.com/userfiles/file/laxofuvafigidow.pdfIn PDF document text
    • http://baheth24cars.com/ckfinder/userfiles/files/taduwosikavetite.pdfIn PDF document text
    • http://it-hair.com/userfiles/80999323783.pdfIn PDF document text
    • https://hoangphatdanang.com/uploads/image/files/85372486308.pdfIn PDF document text
    • http://montagnobozzone.it/userfiles/files/66966511212.pdfIn PDF document text
    • http://doudou.tw/userfiles/files/welutebuxogogu.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/9e8cc3b66c0b24bd1665ed37708df006/gevuretubepinanobobuvape.pdfIn PDF document text
    • http://autodilygood.cz/files/file/rafewudawugoriwone.pdfIn PDF document text
    • https://samsungklima.net/upload/ckfinder/files/64380487491.pdfIn PDF document text
    • http://topp.pl/_topp/file/faweguporib.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/16142d6f322c13---suguvuposabegosetirowa.pdfIn PDF document text
    • http://2015.letnifestiwal.pl/ckfinder/userfiles/files/18308378571.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=resident+evil+5+apk+obbPDF 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_off0000cc7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC7E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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