Malicious PDF — malware analysis report

Static analysis result for SHA-256 14be567aaf5d4e2e…

MALICIOUS

PDF

77.6 KB Created: 2021-08-12 01:01:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 0e6c7c1ef4c66ee3e2197b840ddef1a6 SHA-1: ed4acb6d36802176b7ede172cd6c069bfe34cd49 SHA-256: 14be567aaf5d4e2e99e1435d43c9947752d0b938086c83f4355e52ea76f1f5b1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs pointing to compromised websites and disposable domains, indicating it functions as a link farm. Heuristics suggest these links are used for SEO manipulation or to distribute phishing content. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9140

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://philabc.ru/uplcv?utm_term=classic+vw+beetle+for+sale+autotrader PDF link annotation
    • http://solamsys.com/userData/board/file/sisanurituxefunotuxojeb.pdfIn PDF document text
    • http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/kg138mi767tpf0pnp8pdta6s52/53023780681.pdfIn PDF document text
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/53bc0fc2f19b70a9f7382715203a6c15/ninajikidugukolufaja.pdfIn PDF document text
    • http://aircond.md/upload_fck/file/fatemomiz.pdfIn PDF document text
    • https://rlvanstory.com/wp-content/plugins/super-forms/uploads/php/files/3966c4875d4d23a2243a92e8bba4df66/wupen.pdfIn PDF document text
    • https://mt-creativestudio.com/ckfinder/userfiles/files/49235663331.pdfIn PDF document text
    • https://jmtours.co/aym_image/files/77524318439.pdfIn PDF document text
    • http://velkoobchod-man.eu/ckfinder/userfiles/files/milezuvafiwigipezow.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160813dee8d565---kopawa.pdfIn PDF document text
    • http://grappin-annat-como.com/userfiles/grappin-annat-como.com/file/wabemosatuxuvajumu.pdfIn PDF document text
    • http://rana-international.com/userfiles/files/5241399576.pdfIn PDF document text
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608ea22e53086---fifupapusibawep.pdfIn PDF document text
    • https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/6ppklqrpb2h9dkuvaal6v868lg/65136953589.pdfIn PDF document text
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f40ff1b384c---dawiwajetijowadujaj.pdfIn PDF document text
    • http://holidayservicemarsala.it/userfiles/files/90227070509.pdfIn PDF document text
    • https://telenovella-bg.com/files/ninudux.pdfIn PDF document text
    • https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/vhev0o1scdr9qj4qke2uljadlq/wujadapazuguv.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210617215253125.pdfIn PDF document text
    • http://nensi.si/upload/file/gidudipepa.pdfIn PDF document text
    • http://thanhlapcongtykiengiang.com/upload/ck/files/25479502924.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16080311ec5e8e---xagafizaritunu.pdfIn PDF document text
    • https://vanrun-it.nl/userfiles/files/semunerifusazudul.pdfIn PDF document text
    • http://goodfortune.hk/UpLoadFile/file///wivuzemutataxo.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_off0000f619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF619 17044 bytes
SHA-256: 70a9cdf3a3563aae9ed71d6431a92f6f20dfbc18a8b47ce8b20cfbfbcc0531cb

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