Malicious PDF — malware analysis report

Static analysis result for SHA-256 79f166017be29f9b…

MALICIOUS

PDF

76.2 KB Created: 2021-09-06 06:46:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 485aa1d19e143ef87f44b243e6e8a886 SHA-1: 5790f9863f9232943ebcf642b66470f15fda547f SHA-256: 79f166017be29f9b31d10591cfe7c48bad3cc21c2f4eb5af6251e3a3c25d46b8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URI heuristics and link farm indicators strongly supports a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7511

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://garglob.ru/uplcv?utm_term=impresora+virtual+pdf+gratis+para+tablet PDF link annotation
    • https://lapalettedesarts.fr/gestion/file/7189767401.pdfIn PDF document text
    • https://dejavuruse.com/userfiles/file/romeduv.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606fabff0dede---91698711930.pdfIn PDF document text
    • https://glaze-metalart.com/upload/files/dinumola.pdfIn PDF document text
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/92260e0768ae03eb35a8911f93e0c291/gemonaruxigutese.pdfIn PDF document text
    • http://aimic.com/userfiles/file/66245021334.pdfIn PDF document text
    • https://ngoctraithaibinhduong.com/uploads/news_file/47580663099.pdfIn PDF document text
    • http://mamam.by/upload/File/file/37711459068.pdfIn PDF document text
    • https://sitebyside.ru/wp-content/plugins/super-forms/uploads/php/files/8eed6e6aa7a372098414debbe1301e90/92159761174.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c7730e27c48---jutimojisakirujeni.pdfIn PDF document text
    • http://magogaralbamoble.com/galeria/files/31537678992.pdfIn PDF document text
    • http://hzdsbg.com/uploadfile/1626098513.pdfIn PDF document text
    • http://thumpamonpally.com/userfiles/file/85449455602.pdfIn PDF document text
    • https://cicasoftavukatwebsitesi.demowebsiteleri.com/upload/files/wuzoxin.pdfIn PDF document text
    • https://hogies.com/includes/template/uploads/file/9622714167.pdfIn PDF document text
    • https://naucharts.com/ckfinder/userfiles/files/rusalupo.pdfIn PDF document text
    • http://paradisetnl.com/FileData/ckfinder/files/20210819_66A01AE493358E5B.pdfIn PDF document text
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095c6155d9eb---10418547848.pdfIn PDF document text
    • http://eva.am/files/84c2bd73b30d6aab.pdfIn PDF document text
    • http://s8radziejowice-paszkow.pl/userfiles/file/pisas.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160c336af1f07c---xusepajaxovade.pdfIn PDF document text
    • https://ooobelkom.ru/ckfinder/userfiles/files/79168004547.pdfIn PDF document text
    • https://www.americansummercamps.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083140309da0---61408176537.pdfIn PDF document text
    • https://kaowei.tw/image/files/20210802_112510.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE482 19704 bytes
SHA-256: d97de2a15e5c522b1ae9fa8ca03e9a3766a5767b25c720f086560b919175ea6c
font_01_sfnt_off00011732.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11732 10992 bytes
SHA-256: 861f440aeda9717cc94f30091e1049ce1ed32f2fbf0a0a5997f1a792f83584fb

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