Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9222d3d47f17c8e…

MALICIOUS

PDF

101.5 KB Created: 2021-07-26 06:29:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: dd27a8efc81365b8a8a261ab015fef1d SHA-1: 8a3daaeb5e4dc7d27066bca022d147c99c75b6b0 SHA-256: e9222d3d47f17c8e81bd0e772f09c79d730359f4f46194672858cb5204d669ad
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with many embedded URLs pointing to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution scheme. The document body is heavily obfuscated, preventing a clear understanding of its specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6583

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://etimes.mn/uploads/files/zegisividomoserupuwo.pdf In PDF document text
    • http://alimentosldm.com/userfiles/file/pojuvaloja.pdfIn PDF document text
    • http://www.akutrans.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdd9f652428---tiwosalipevuru.pdfIn PDF document text
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/ej0ipbu829tg6rafrkq4krbvac/98692042963.pdfIn PDF document text
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9dd8644c1e---fexukilejisizomu.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/of7hb7pl6c763b6ejin0t2p900/zonigusomosobikefomosoma.pdfIn PDF document text
    • http://arohitourandtravels.com/userfiles/file/muweka.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/e476cf1b244b5fff7d5a15567349ddc9/49899824932.pdfIn PDF document text
    • http://www.companyforte.com/imagenes/editor/file/desedunilifijipizimemiw.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/vijc30m6p1k7d0lv0tcaqp3rob/72219432678.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/ie7ekmf9vao4718afs9cujb98q/28902602689.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/8s3pu4tf34n0lo68pjpgpvhvm0/liwigevapabig.pdfIn PDF document text
    • http://wohntraumgmbh.at/dazanovekani.pdfIn PDF document text
    • https://0900107678.com/upload/file/wufipe.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e426cc0960---ganivutezimibojaxaju.pdfIn PDF document text
    • http://teplo76.ru/uploads/file/17707319939.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/b072b8cda1a1868263efef6755535829/mobopexid.pdfIn PDF document text
    • https://sitpchemcieszyn.pl/_sitpchem/file/voxewozekimadexusaruz.pdfIn PDF document text
    • https://audreyheselmans.com/_files/file/dozado.pdfIn PDF document text
    • https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/156876872824ebfddbce45327b6a287a/muroxanopegixogola.pdfIn PDF document text
    • https://soechi.id/userfiles/file/25146030702.pdfIn PDF document text
    • http://zionhillfirstbaptistchurch.com/clients/73368/File/47289850953.pdfIn PDF document text
    • https://larioenergy.net/uploads/file/82017262211.pdfIn PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/f287e6de940461f2adbcbb2e9fc77231/19768928895.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=pocket+keys+for+writers+6th+edition+ebookPDF 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_off0001557a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1557A 10964 bytes
SHA-256: 85c1f1fb3fff88f59e735271e4a4f019cb2dedb924355da730eab9d7fc8d9b57

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