Malicious PDF — malware analysis report

Static analysis result for SHA-256 945b6890cfbb762d…

MALICIOUS

PDF

71.6 KB Created: 2021-09-13 21:14:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 443d1d5177715c3c14e8b947a2facfd9 SHA-1: e9a6807931e821cc6331d468482fdd230bc80796 SHA-256: 945b6890cfbb762d73cb242dd099e091f03432746324943aed633d51b2cfca52
124 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to a link farm, suggesting an attempt to redirect users to malicious content or exploit SEO vulnerabilities. While no scripts were explicitly extracted, the PDF structure and embedded URIs indicate a malicious intent to redirect users, likely as part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6688

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mp-journal.com/media/file/donodanibomoxotarajagor.pdf In PDF document text
    • https://protradingindia.net/userfiles/file/nemariwijodopatafekuz.pdfIn PDF document text
    • http://www.pvvc.cz/files/dotesumidagemezadi.pdfIn PDF document text
    • http://ancient-theater.gr/media/file/75312903865.pdfIn PDF document text
    • https://sweetburden.com/upload/users/files/nutumutumulijowasuno.pdfIn PDF document text
    • http://alhouti.com/userfiles/file/pexoxemolodobevininajo.pdfIn PDF document text
    • https://aneri12.eu/res/file/tudori.pdfIn PDF document text
    • http://xn----otbbfbbknchz.xn--p1ai/sadm_files/jamivik.pdfIn PDF document text
    • http://annabarons.com/files/files/22987081860.pdfIn PDF document text
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/e28877f234cf64d0c8e67071a32116b0/83867868172.pdfIn PDF document text
    • https://marblobaths.com/app/webroot/img/files/99091416219.pdfIn PDF document text
    • http://redactron.com/userfiles/file/69347513498.pdfIn PDF document text
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/16134af78c23b6---23147015046.pdfIn PDF document text
    • http://hk888.edo2008.com/com/comimg/file/20210913_140247_121.pdfIn PDF document text
    • http://architettobotteonpierpaolostudioabacus.it/userfiles/files/fepegun.pdfIn PDF document text
    • http://re-media.ru/foto/ck/files/27798464472.pdfIn PDF document text
    • http://thaoduocvn.com/userfiles/image/file/goxerawemox.pdfIn PDF document text
    • https://pfollowers.com/ci/userfiles/files/79960704674.pdfIn PDF document text
    • https://novamakine.com/upload/ckfinder/files/75314761875.pdfIn PDF document text
    • http://yuhongzg.com/d/files/29877565189.pdfIn PDF document text
    • https://newshieldinsurance.com/demo/gsa/final/images/file/dofalozukerosobesu.pdfIn PDF document text
    • https://greenline.bg/userfiles/file/74965328916.pdfIn PDF document text
    • http://bc-arman.kz/ckfinder/userfiles/files/lazorolexiwix.pdfIn PDF document text
    • https://designmaster.in/scgtest/eec-new/codelibrary/ckeditor/ckfinder/userfiles/files/lepolobuxaluritasowos.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=app+store+alternative+androidPDF link annotation
    • http://crossfit28.com.s125853.gridserver.com/siteuploads/editorimg/file/6852175102.pdfIn PDF document text
    • 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_off0000e15f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE15F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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