Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d38fc5628c5c29c…

MALICIOUS

PDF

78.1 KB Created: 2021-09-11 03:59:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 22d8af8fda906d5987cf4959ee56ba2c SHA-1: e718389c9839cffcb98ccdfbeff5bc6add362b20 SHA-256: 2d38fc5628c5c29c4bcb39c00e90a22d2e914ca2559faade7066b2e2da984695
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and is identified as a link farm, directing users to multiple external URLs. The presence of embedded JavaScript and the nature of the URLs suggest an attempt to redirect users to malicious sites for phishing or malware distribution. The ClamAV detection and ML classifier further support its malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7431

Heuristics 6

  • 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.
  • 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://www.performhabitat.fr/bundles/astadmin/js/ckfinder/userfiles/files/57754159498.pdf In PDF document text
    • http://agriturismolataggiasca.eu/userfiles/files/padesadufu.pdfIn PDF document text
    • https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/f2dac2c9fce0dd968f1835de72816f56/11632001705.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1613a89d020e18---89059493168.pdfIn PDF document text
    • http://unibox.lv/files/text/pilaru.pdfIn PDF document text
    • http://sola-brothers.com/userfiles/file/5455368006.pdfIn PDF document text
    • https://milosislandrooms.gr/userfiles/file/5703361986.pdfIn PDF document text
    • http://hasdeu.md/data/userfiles/files/dinopotujosudoges.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131518ee3adf---51082122854.pdfIn PDF document text
    • http://herve-coiffure.ci/files/24964076051.pdfIn PDF document text
    • https://classconnbio.com/img-jacson/files/27129125467.pdfIn PDF document text
    • http://myphamnanyno.com/luutru/files/texibejorarowasapepajo.pdfIn PDF document text
    • https://idea-web.ro/app/webroot/files/userfiles/files/mimadubunodogelazesebab.pdfIn PDF document text
    • http://tythb.cn/uploadfile/files/14894050527.pdfIn PDF document text
    • https://solidpractise.com/files/userfiles/file/mipujevapetijuximijokoj.pdfIn PDF document text
    • http://emilygrilltogo.com/uploads/files/loxid.pdfIn PDF document text
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/jofg5t7tc726jpuibmbfnf0hr0/31768344936.pdfIn PDF document text
    • https://calendarsunrooms.com/userfiles/files/78250204092.pdfIn PDF document text
    • http://eskuvotoszkanaban.hu/editor_up/vowikefagefitaxuvi.pdfIn PDF document text
    • http://compow.net/ckfinder/userfiles/files/48819622687.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/de3f33faf8b2bb73ec7b829ab60b8b3d/52326971992.pdfIn PDF document text
    • http://i-p-p-c.com/ckfinder/userfiles/files/mojewisojekito.pdfIn PDF document text
    • https://selispin.com/calisma2/files/uploads/60390001249.pdfIn PDF document text
    • http://s-privod.ru/userfiles/file/jijusisasafatevorira.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=justice+league+war+full+movie+online+freePDF link annotation
    • 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_off0000ed1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED1B 19056 bytes
SHA-256: b46c6a221b005db39c302ff26f3b99138da43effb6e1f2057815541257a4ceb4
font_01_sfnt_off00011e35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E35 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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