Malicious PDF — malware analysis report

Static analysis result for SHA-256 27347c65ab19bdf0…

MALICIOUS

PDF

110.9 KB Created: 2021-09-01 05:14:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: e5cb0c2f14992c7463389c96f4fc22be SHA-1: 22482a9f660f515190833b67ed9b65c05d39cc48 SHA-256: 27347c65ab19bdf034222c3cdcdcaa1d2a2a66ba86352b67c179b56f9256132d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, many pointing to compromised WordPress upload directories, suggesting a link farm designed to lure users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution via these links. No scripts were extracted, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8962

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://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fd13d759c3---xataretiwukiwanal.pdf In PDF document text
    • http://bestorkate.com/uploads/ckeditor/files/45939393280.pdfIn PDF document text
    • http://epmachine.ru/d/files/10141317621.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/pu2onqj1crqlpt91c1d1u4dite/44321600325.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c91dc27c0b9---nulisedodojofewudubo.pdfIn PDF document text
    • http://efeotokiralama.com/Upload/file/tedazodojadi.pdfIn PDF document text
    • http://sam-global.info/files/file/tibebilanaragetejolirevuv.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/0001c7772798ef56f1a650e14ff33271/94649089700.pdfIn PDF document text
    • http://zonwering-belgie.nl/ckfinder/userfiles/files/supopuxabakufozazigeb.pdfIn PDF document text
    • https://zold-kommando.hu/files/97220283288.pdfIn PDF document text
    • https://a2designbg.com/userfiles/file/90698190934.pdfIn PDF document text
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/f5tor1e5fcv96kt6tcd8v1eq4g/50505432514.pdfIn PDF document text
    • http://multi-accueil.fr/ressource/site-image/files/gizugetawuxipitov.pdfIn PDF document text
    • https://defi128.phpascal.com/userfiles/files/43573074622.pdfIn PDF document text
    • http://agriturismocorteerbatici.it/userfiles/files/gowutoga.pdfIn PDF document text
    • http://aihyang.com/userfiles/file/89284660369.pdfIn PDF document text
    • http://pyramidplaster.com/file_media/file_image/file/jomalenawakoresaj.pdfIn PDF document text
    • http://www.liveartsaskatchewan.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5fb505e660---xekizi.pdfIn PDF document text
    • http://fotossc.pl/_files/file/33399888820.pdfIn PDF document text
    • http://we2meeting.com/ckfinder/userfiles/publics/files/wotatorowotagafitipelawa.pdfIn PDF document text
    • https://viboot.com/ckfinder/userfiles/files/99881817385.pdfIn PDF document text
    • https://shoppingplanet.ro/ckfinder/userfiles/files/40167470236.pdfIn PDF document text
    • https://hashtag.school/userfiles/file/82448480650.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=what+is+a+mammalPDF 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_off0001a6ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A6AD 9912 bytes
SHA-256: 918fc76d0958324bc0e149db5e3d14d73155b898720b1def8030a2c1bf52cd53

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