Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cd76db9a9d8deb1…

MALICIOUS

PDF

56.6 KB Created: 2021-10-01 19:10:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 5f789dbfd65b7ad2f6d70f76565a812c SHA-1: 3f0d45c77659d3ea92039472ea3daea908a89e14 SHA-256: 1cd76db9a9d8deb12e721e9889fff47a35124c7a9aff6fbf1404e2f49ec34fb8
94 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, with a significant number pointing to potentially malicious or disposable domains, indicative of a link farm. The ClamAV heuristic identifies it as 'Pdf.Phishing.Trojan', strongly suggesting a phishing or malware distribution intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this by noting the presence of many distinct, low-reputation hosts.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4703

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://drumlockingclamp.com/FCK_Editor_Images/files/redofog.pdf In PDF document text
    • http://bellina.pl/userfiles/file/78004180.pdfIn PDF document text
    • https://profitaler.com/UserFiles/file/vaverupuvuluzabiz.pdfIn PDF document text
    • https://abzesolar.com/uploads/files/57642765366.pdfIn PDF document text
    • http://liveisagenix.com/ckfinder/userfiles/files/32727240161.pdfIn PDF document text
    • https://nomortiga.com/contents/files/nevifesuvimizo.pdfIn PDF document text
    • http://karinameal.ru/imgdish/files/84484188995.pdfIn PDF document text
    • https://mimpisiluman.com/contents/files/72531652999.pdfIn PDF document text
    • http://edu-family72.ru/content/images/uploads/file/70352118458.pdfIn PDF document text
    • https://lucky-erotic-massage-bucharest.ro/ckfinder/userfiles/files/xixexubowopelojarugizaker.pdfIn PDF document text
    • https://okinawa4d.com/contents/files/33106421307.pdfIn PDF document text
    • http://www.southforconstruction.com/frontend/web/ckfinder/userfiles/files/jetakewepavavorogem.pdfIn PDF document text
    • http://edeins.com/userfiles/file/migidajiwosop.pdfIn PDF document text
    • http://studiomanzella.com/userfiles/files/95215564901.pdfIn PDF document text
    • http://clairvoyantinfotech.com/demo/images/teraxuni.pdfIn PDF document text
    • https://nppgursaraijhansi.in/ckfinder/userfiles/files/47898168883.pdfIn PDF document text
    • http://fasson.vip/images/editor/files/6670898103.pdfIn PDF document text
    • http://tunesistudio.eu/userfiles/files/wepiwuloposumuxo.pdfIn PDF document text
    • http://www.santamyoga.be/images/file/97311455291.pdfIn PDF document text
    • https://tavcam.com/upload/ckfinder/files/janibimofumexur.pdfIn PDF document text
    • https://giverny-bkk.com/upload/files/21421527900.pdfIn PDF document text
    • https://saigonservices.vn/images/uploads/files/22747023183.pdfIn PDF document text
    • http://leebyunghun.org/new/upload/board/files/61410356752.pdfIn PDF document text
    • http://hoanhaochemical.com/uploads/files/53280947795.pdfIn PDF document text
    • http://goldenmallbiotech.com/upload/files/65858796527.pdfIn PDF document text
    • http://webhoctot.com/app/webroot/uploads/files/xujiwogepapita.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=baseball+9+mod+apk+android+1PDF link annotation