Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e411d7b582987f8…

MALICIOUS

PDF

77.6 KB Created: 2021-09-13 05:45:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 809ec0d471b838fe203084c48154e132 SHA-1: 1d79003e05dfde805721b616883b4888bd266176 SHA-256: 3e411d7b582987f8a3cf1fd67002e2cceb2f52ff3ffe60dad44b11e314e87c71
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links pointing to various domains, many of which appear to be disposable or compromised, as indicated by the 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics. ClamAV also detected this file as 'Pdf.Phishing.Trojan'. The primary function appears to be directing users to external sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4847

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
  • 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 http://digitalpolicycouncil.com/imagenes/file/72069235858.pdf In PDF document text
    • http://2ds-creations.fr/userfiles/file/21554695401.pdfIn PDF document text
    • http://demirlermetal.com/resimler/files/xetitozutuzezobotofolal.pdfIn PDF document text
    • http://thuexe7cho.vn/upload/files/57947175346.pdfIn PDF document text
    • http://aylabawadi.ae/userfiles/file/vidurus.pdfIn PDF document text
    • https://clarkfamilybuilders.com/home/clark/public_html/ckfinder/userfiles/files/zalosurajasolumepemafu.pdfIn PDF document text
    • http://yachtales.net/admin/userfiles/files/43582444838.pdfIn PDF document text
    • http://clinicaveterinariaalbese.eu/userfiles/files/waxoririmegawosituwe.pdfIn PDF document text
    • https://btsis.com/upload/ckfinder/files/gabaresunivemonajizomuj.pdfIn PDF document text
    • http://police8coop.com/UserFiles/file/71269964404.pdfIn PDF document text
    • http://hastensandbreakfast.nl/userfiles/file/zodamero.pdfIn PDF document text
    • http://ssatripoli.org/userfiles/file/sefoxevosaj.pdfIn PDF document text
    • https://mamadona.ru/ckfinder/userfiles/files/dozejota.pdfIn PDF document text
    • https://corpus.bg/files/fck/file/xedilugukemafevigi.pdfIn PDF document text
    • https://morganmethod.com/ci/userfiles/files/51769176029.pdfIn PDF document text
    • http://grafichesirio.com/userfiles/files/lamexozobajavigob.pdfIn PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613111f79045b---mabizoxawojoritifajoludu.pdfIn PDF document text
    • http://rszm88.com/upfolder/e/files/20210904235219.pdfIn PDF document text
    • http://kutscher-customs.de/gfx/userfiles/files/44552754006.pdfIn PDF document text
    • http://mamolenasnc.it/userfiles/files/xakubunelefab.pdfIn PDF document text
    • https://vinatech.com/userfiles/file/1776663547.pdfIn PDF document text
    • http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/2a047255a8b6eb9c0d99b7cc68d30a01/24520909539.pdfIn PDF document text
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/1613037144161e---xojoro.pdfIn PDF document text
    • http://machinegroup.ru/img/outer/files/ponorovikatisarujosixadig.pdfIn PDF document text
    • https://sherwoodchamber.org/ckfinder/userfiles/files/29024554323.pdfIn PDF document text
    • http://niezapominajkowo.eu/userfiles/file/natiwexe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=swiftkey+split+keyboardPDF 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_off00010147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10147 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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