Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5bec2e989997cf7…

MALICIOUS

PDF

62.3 KB Created: 2021-09-15 20:08:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: d83d404a32b335df14c7d43512df888b SHA-1: beb27d367a08750cda3bc8912a3004ecc7567817 SHA-256: a5bec2e989997cf7e1471a6f37f94420fc34fec17876d41aed651ee7e1c27057
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to various domains, many of which appear to be compromised or disposable hosting. The ClamAV detection and ML classifier indicate malicious intent, likely to lure users to malicious sites for phishing or to download further malware. No scripts were extracted, but the structure suggests a link farm designed for initial access via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5042

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=ludo+apk+mod+download PDF link annotation
    • http://wsp.pl/userfiles/file/risijuderaniz.pdfIn PDF document text
    • https://refakatci.net/userfiles/file/50834810047.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cfac499c88---bonanenodi.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/67461e8591837ce5be93a7507c795b70/bagulaxibibexofebinojokij.pdfIn PDF document text
    • http://yuanyoujie.vip/userfiles/file/rufazejifadaxewaxugo.pdfIn PDF document text
    • https://kalimati.in/userfiles/file/zatunodeweja.pdfIn PDF document text
    • https://hotelmitrutarija.com/uploaded/files/13436621433.pdfIn PDF document text
    • http://www.awakohchang.com/image/upload/File/7803766082.pdfIn PDF document text
    • http://architettogherardi.eu/userfiles/files/murejogujojesiri.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f67d48317a0d29713eb9ec62d3dcdb07/liketixajamikodapuronixub.pdfIn PDF document text
    • http://worshipedia.mobi/sites/default/files/file/15680230384.pdfIn PDF document text
    • https://limpiezasinasel.com/userfiles/files/87733870091.pdfIn PDF document text
    • http://food-cloud.com/home/food-cloud/www/site/site/data/files/dopiposugagamusedufasito.pdfIn PDF document text
    • http://xn----ctbguteehkho5h.xn--p1ai/ckfinder/userfiles/files/66183945101.pdfIn PDF document text
    • http://myredm.ru/uploads/file/71982204187.pdfIn PDF document text
    • https://intrigantka.ru/images/userfiles/file/juvugupofugatezevuvasike.pdfIn PDF document text
    • http://riverhouse.at/pcms/content/file/momepukidipi.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138c286ea632---birejovofevojinurikeromul.pdfIn PDF document text
    • http://gattoneva.pl/pages/userfiles/file/31524709544.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/f9igichknj9scqpdtdkf3qarcf/15035442732.pdfIn PDF document text
    • http://koovappadyscb.com/ckfinder/userfiles/files/64319298331.pdfIn PDF document text
    • http://www.zywawiara.pl/pliki/tekuka.pdfIn PDF document text
    • http://arcdesantmarti.com/biocop/Images/images-editor/file/wisujidex.pdfIn PDF document text
    • https://cissud.com/uploads/ck_editor/files/gezoxuwovumajame.pdfIn PDF document text
    • http://s-pack.kr/userfiles/file/20210913010215.pdfIn PDF document text
    • http://mothertheresapublicschool.com/userfiles/file/nowudilujorad.pdfIn PDF document text
    • 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_off0000ceb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB9 17268 bytes
SHA-256: 468014e4ba0807aaf5107e7c3598e67b4b54d45ead9dd128fd861a3b8fbb8a1b

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