Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bdf1880aedc92b6…

MALICIOUS

PDF

41.5 KB Created: 2021-09-02 10:14:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: e0d3234852af54904290522c356f8234 SHA-1: 13b0923bbf4dce8c19b621bb4c1c8d98fec47b6f SHA-256: 1bdf1880aedc92b6705c6e1a558592f45a419a5fa5521241418b7d9c62c71f61
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7634

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://irlanc.ru/uplcv?utm_term=microbiology+an+evolving+science+3rd+edition+pdf PDF link annotation
    • http://zs-oilfieldequip.ru/d/files/dojugetoxiseseramulirega.pdfIn PDF document text
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/d00a7f418eb3905fb241b4913d6570d7/wewavufivadowaxe.pdfIn PDF document text
    • https://thucphamtruongxanh.com/Upload/files/farewomufowemifevuwoga.pdfIn PDF document text
    • http://suamayin.biz/userfiles/file/ditumowemefifowig.pdfIn PDF document text
    • https://soudureornementalelauziere.com/upload/editor/file/75823070282.pdfIn PDF document text
    • http://denge.aero/upload/files/70625421569.pdfIn PDF document text
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160982eae856e0---50118932983.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160aaa98261f74---fetelexutavemi.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/57000f572a4ceeb30b77ab99e1f2130a/dovosonesilam.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/4nns5lctoo8h7rbmd7kftlh8g1/sobamef.pdfIn PDF document text
    • https://kenkochaya.com/user_data/ckfinder/files/63524015871.pdfIn PDF document text
    • https://www.terraton.com.my/ckfinder/userfiles/files/72386027313.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6455254b1584d2a247b3d1070b0c0f99/zimefef.pdfIn PDF document text
    • http://markone-tools.com/upload/files/muzodajeredugudomape.pdfIn PDF document text
    • http://sskj.pl/userfiles/file/bexafudiwivopane.pdfIn PDF document text
    • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/563425330c83a5bd33548d0bac279310/mavomuru.pdfIn PDF document text
    • https://biovuspharma.net/userfiles/files/zekazitofarikibelawomubo.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e781d47c634---42433580338.pdfIn PDF document text
    • https://ifbscalidad.eus/files/galeria/files/fepewubadutikiguzesid.pdfIn PDF document text
    • http://euredit-editions.com/userfiles/file/godijofuxif.pdfIn PDF document text
    • https://gachbinhduong.com/upload/file/zutibisidojesog.pdfIn PDF document text
    • http://vistobrasil.net/uploads/file/19674502122.pdfIn PDF document text

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