Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b25b06f98cbe635…

MALICIOUS

PDF

72.0 KB Created: 2021-09-24 22:58:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 4b161850a41741e49c88369b776fc057 SHA-1: 9ae6d39ed465c18c2609a4072aa85ae03be46152 SHA-256: 7b25b06f98cbe63587969af74177b534ac26c8ced5f589cc878350874c9ba882
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript which is a strong indicator of malicious intent, likely to redirect the user to a phishing or malware distribution site. The heuristic firings and numerous external URLs, many of which are on disposable domains, further support this assessment. The ClamAV detection confirms the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4825

Heuristics 5

  • 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.
  • 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 https://irlanc.ru/uplcv?utm_term=miui+13+redmi+note+9+pro PDF link annotation
    • https://tedvandergulik.nl/userimages/file/depewupotavulol.pdfIn PDF document text
    • http://madiran-cruduparadis.fr/ckfinder/userfiles/files/xugov.pdfIn PDF document text
    • http://progetec.org/userfiles/files/77146383396.pdfIn PDF document text
    • http://maslag.eu/userfiles/file/rawatok.pdfIn PDF document text
    • http://e-hematologica.pl/users/file/galuxeluwavezab.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/b78e5132b20ba23b9fe2902891f53595/96165146923.pdfIn PDF document text
    • http://sicilalluminio.it/userfiles/files/14354711647.pdfIn PDF document text
    • http://wwstationery.com/files/file/22825878260.pdfIn PDF document text
    • https://baoyi-chuck.com/ckfinder/userfiles/files/69625575671.pdfIn PDF document text
    • http://bongoes62.dk/userfiles/file/zaxusapuvumugiwosuloj.pdfIn PDF document text
    • http://change4best.ru/upload/file/78496273741.pdfIn PDF document text
    • http://montpellier-businessplan.eu/mbp/upload/images/images/upload/ckfinder/zitomaberasa.pdfIn PDF document text
    • http://bongoes62.dk/userfiles/file/82862217051.pdfIn PDF document text
    • https://nsaimmigration.com/userfiles/file/57184163307.pdfIn PDF document text
    • http://xn--72c7caerxx0d3a9eve.com/UserFiles/File/woxobitel.pdfIn PDF document text
    • https://imad0c0.com/js/ckfinder/userfiles/files/womude.pdfIn PDF document text
    • https://onderhoudnlgarantie.nl/upload/file/52730331327.pdfIn PDF document text
    • https://makojudo.pl/zdjecia/fck/file/gexogitujifisimafi.pdfIn PDF document text
    • http://feg.vn/uploads/files/xitulox.pdfIn PDF document text
    • https://dongciao.com/uploads/files/202109230535521445.pdfIn PDF document text
    • http://narcisse.sk/editor_uploads/files/57868322807.pdfIn PDF document text
    • https://havadisname.com/upload/ckfinder/files/medetuvofe.pdfIn PDF document text
    • http://elverum-revmatiker.no/images/file/lotivowavujalanabitoj.pdfIn PDF document text
    • http://bwemfjhjk.friend-match.com/upload/files/80777887347.pdfIn PDF document text
    • http://baikalspring.ru/ckfinder/userfiles/files/gogitegulufudinujanera.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC114 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD926 18324 bytes
SHA-256: 72353ba7aa45e4a48c3d1efa575379d6aad843cc058a9e0b97c7be50940463c6
font_02_sfnt_off00010921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10921 10664 bytes
SHA-256: 30ab872ead397f6b31eb1e5feae18bd9fabe4c2b43f2ecbc5221479b93ee7b8d

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