Malicious PDF — malware analysis report

Static analysis result for SHA-256 62074ff62d43f3e0…

MALICIOUS

PDF

70.4 KB Created: 2021-09-13 07:00:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 713308ff9241d6c33b97851c2d166599 SHA-1: acb2093dd6a4c6468eb8618e71ce1047ec5be500 SHA-256: 62074ff62d43f3e0c9c692d540df25b3e24db475874286931a7de0c7aa4f652f
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded JavaScript stream and a link farm pointing to numerous external URLs, some hosted on compromised CMS uploads and disposable domains. The primary function appears to be redirecting users through a series of links, likely to deliver a malicious payload or conduct phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://aarushimukhwas.idealviews.com/userfiles/files/31597192742.pdf In PDF document text
    • https://xn----7sbeo1acdy3adh.xn--p1ai/userfiles/file/81365330001.pdfIn PDF document text
    • http://yokosohk.com/files/fckfiles/file/gavularinuxava.pdfIn PDF document text
    • http://maternites-catholiques.org/ressource/site-image/files/4945948625.pdfIn PDF document text
    • https://apaman.ti-am.jp/js/ckfinder/userfiles/files/zefajitiwepasagetefepe.pdfIn PDF document text
    • http://gomientrung.vn/uploads/image/files/vawaxujefe.pdfIn PDF document text
    • http://evola.it/userfiles/files/69596964523.pdfIn PDF document text
    • http://caminodesantiagoenmoto.com/assets/ckfinder/core/connector/php/uploads/files/naxonizamune.pdfIn PDF document text
    • https://hargagila.com/uploads/image/files/33583083587.pdfIn PDF document text
    • http://ngnjl.com/userfiles/files/22641955337.pdfIn PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/2ebbb10ff30ec6bd94bb8d69a4ae3d2e/nerodijuvoziret.pdfIn PDF document text
    • http://commandhousecreations.com/uploads/files/18328291935.pdfIn PDF document text
    • https://sklep-pinokio.pl/web/uploads/files/71048405742.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136312e4b752---getawuvuxipolobo.pdfIn PDF document text
    • http://minhanh.com/files/23479357051.pdfIn PDF document text
    • http://bdsductri.com/upload/files/telejitibovoj.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/161393052a2031---21857189958.pdfIn PDF document text
    • http://newkontakt.ru/userfiles/images/file/zoliwujed.pdfIn PDF document text
    • http://brenno-tojestto.pl/userfiles/file/limerejubuxa.pdfIn PDF document text
    • https://thingstodobahrain.net/ckfinder/userfiles/files/xamuwasuje.pdfIn PDF document text
    • http://ivankrivanek.com/userfiles/file/92235585573.pdfIn PDF document text
    • https://bnbcostaverde.it/userfiles/file/tosurineluzimo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=cast+to+chromecast+from+chrome+androidPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b3b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3B9 10728 bytes
SHA-256: cf80bef62d6e7476ee668b969a23cb5409d45dbd9becd41f4e1b791be66fe922
font_01_sfnt_off0000cc33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC33 15588 bytes
SHA-256: 4b26622bf0d23e50df15ed2fa04dc7c45e7c02083fb03fa90c5cf8aedde2e160
font_02_sfnt_off0000f3d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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