Malicious PDF — malware analysis report

Static analysis result for SHA-256 44e98d48fe59d4e3…

MALICIOUS

PDF

41.7 KB Created: 2021-10-08 05:25:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 0bd8928f74d887cb980cc9e9d01c524e SHA-1: dcabf17a4c1412434f8072e75d77bf39ce2f6d88 SHA-256: 44e98d48fe59d4e3c91178212cfbc34d38182c7e05a110208588320492d1ab80
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF is identified as an image-only lure, typical of phishing campaigns, with heuristics indicating it's a link farm on disposable hosting. ClamAV and ML classifiers also flagged it as malicious. While no scripts were extracted, the PDF structure and numerous unknown URLs suggest it's designed to redirect users to malicious content, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7814

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
  • 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.
  • 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://balony.dmuchance.eu/userfiles/file/sipuwodusuverogise.pdf In PDF document text
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/1614b4c8549a4f---97791388187.pdfIn PDF document text
    • http://1-cities.com/blog_images/blog_/file/59151143571.pdfIn PDF document text
    • https://loonbedrijfschimmel.nl/userfiles/files/37978304629.pdfIn PDF document text
    • http://vdtonline.vn/static/uploads/editor/files/zanewirusidekixikes.pdfIn PDF document text
    • http://ukkies.be/userfiles/file/wimanerilinola.pdfIn PDF document text
    • https://andymullinscommercial.com/home/andy/public_html/ckfinder/userfiles/files/zotabuxixuzumubavi.pdfIn PDF document text
    • http://giasuthienphuc.com/Images_upload/files/96669072372.pdfIn PDF document text
    • http://jumpstart.mobi/userfiles/file/bulil.pdfIn PDF document text
    • http://innovad-ltd.com/userfiles/file/pepadaduzi.pdfIn PDF document text
    • https://edusfera.pl/upload/file/70584512942.pdfIn PDF document text
    • http://signexpowholesale.com/project-new/christianbook/upload_images/file/wimekudozoromasaxebag.pdfIn PDF document text
    • https://careersourcechipola.com/files/public/23535804407.pdfIn PDF document text
    • https://iqmuseum.mn/uploads/files/70446323894.pdfIn PDF document text
    • https://tideandtigers.com/ckfinder/userfiles/files/2652357131.pdfIn PDF document text
    • http://kondicionery-shodnya.ru/upload_picture/file/75793855966.pdfIn PDF document text
    • http://theurbanbazzaar.com/userfiles/file/dakake.pdfIn PDF document text
    • http://jedzenie365.pl/ckfinder/userfiles/files/nilidupifevunifakub.pdfIn PDF document text
    • http://ourpreferred.com/userfiles/files/pakafu.pdfIn PDF document text
    • http://niestachow.pl/data/aktualnosci_imgs/file/33691637219.pdfIn PDF document text
    • http://imi.vc/upload/files/4824784630.pdfIn PDF document text
    • https://giaynangchieucao.com/userfiles/file/79026633783.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=sinners+wanted+full+moviePDF link annotation

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