Malicious PDF — malware analysis report

Static analysis result for SHA-256 36dac1db6793f790…

MALICIOUS

PDF

42.8 KB Created: 2021-09-25 13:47:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: cd5c37a5294bd53588ba0e923705eec5 SHA-1: fe25ad362ec53e12ecb148df57d45a6010f10888 SHA-256: 36dac1db6793f790fb1fe5a201cff8d2f3f0a9b59f8ec74699bf57198bf27c1a
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-only nature and embedded clickable links. The ClamAV detection and ML classifier further support its malicious classification. The document likely attempts to redirect the user to a compromised CMS upload or disposable hosting site, potentially for downloading further malware or phishing for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6587

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 42 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 http://marinda.ru/pics/images/file/77012984907.pdf In PDF document text
    • https://cylinder96.ru/admin/ckfinder/userfiles/files/lukizaban.pdfIn PDF document text
    • http://giovanniseneca.eu/userfiles/files/2160284782.pdfIn PDF document text
    • http://ohdiabo.net/images/ckeditor/files/47481473955.pdfIn PDF document text
    • http://igs.compcierge-asia.com/ckfinder/userfiles/files/nederanozigaloxedigo.pdfIn PDF document text
    • http://thietbimaugiao.vn/Images_upload/files/nemenoredo.pdfIn PDF document text
    • http://www.louisianarebarcontractor.com/editorimg/file/wojagejevavivolopeli.pdfIn PDF document text
    • https://searchkar.com/ci/userfiles/files/mivupakulezu.pdfIn PDF document text
    • http://www.parinet.fi/tiedostot/files/61986747061.pdfIn PDF document text
    • https://mimpidia2.com/contents/files/72045004808.pdfIn PDF document text
    • https://sergeca.com.ve/ckfinder/userfiles/files/tajal.pdfIn PDF document text
    • http://sistarelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/lutoloniligumopopobitod.pdfIn PDF document text
    • https://chennothinterios.com/uploads/file/38067383415.pdfIn PDF document text
    • https://censcakmu.org/board/file/files/biwosegigufuvimenuk.pdfIn PDF document text
    • https://likeevent.it/writable/public/userfiles/file/rixazawajo.pdfIn PDF document text
    • https://knurussian.kr/DATA/upload/files/202109051233505664.pdfIn PDF document text
    • http://hophungvietnam.com/app/webroot/uploads/files/38594437687.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1614b7b2fbb0f4---teviderokosaxapovujase.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/cc9df4829318a62fc55941375c0f770a/zokekovizutupudamobop.pdfIn PDF document text
    • http://wideanglepackaging.com/ckfinder/userfiles/files/wizezubujib.pdfIn PDF document text
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/r2t0l9tfs7abufdoh1s3b2rb6p/16222374630.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=demon+slayer+full+movie+free+downloadPDF link annotation

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