Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e06f07e58444056…

MALICIOUS

PDF

83.3 KB Created: 2021-09-12 23:25:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 16113aab89d73a776f4d5797d84888ae SHA-1: 8f75c7bbe2caa5136fe6da89e45b27fe61631586 SHA-256: 2e06f07e58444056e0f5947b0686b21f4e11786bdcc112e45c79ede5f5919729
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded JavaScript stream and a large number of external links, many hosted on compromised WordPress sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a common technique for executing malicious code within a PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://philabc.ru/uplcv?utm_term=eliminare+app+tim+android PDF link annotation
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/c39503d6d74aec0cd4c99a1b1f171dbf/gajugugiwusu.pdfIn PDF document text
    • http://strap.sk/uploads/files/92249487175.pdfIn PDF document text
    • https://fallsplat.se/bildbank/file/zosobanu.pdfIn PDF document text
    • https://paymentor.nl/uploads/file/28994835643.pdfIn PDF document text
    • http://scpt.it/userfiles/files/98209077085.pdfIn PDF document text
    • https://karapinler.com/calisma2/files/uploads/bimalalerarogutureter.pdfIn PDF document text
    • http://onyx-innovations.com/assets/ckfinder/userfiles/files/7384253169.pdfIn PDF document text
    • http://www.park-seversk.ru/other/js/ckfinder/userfiles/files/33766809639.pdfIn PDF document text
    • http://reanda.com/jingkelun/userfiles/files/20210912125108.pdfIn PDF document text
    • http://chemtron-vostok.ru/media/file/69011759424.pdfIn PDF document text
    • https://5703n1n6999-6a55.com/contents/files/7290319085.pdfIn PDF document text
    • https://salwangurugram.com/files/xirufuvitivagogofaradi.pdfIn PDF document text
    • http://brucemayrockinstitute.com/assets/ckfinder/core/connector/php/uploads/files/71626322939.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137f0378b871---10571632464.pdfIn PDF document text
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/m3ugu2gbofss04s6qs7ftm7cr2/xujexenapajukuwazozena.pdfIn PDF document text
    • http://euromarkcreations.com/new/fck_img/file/76598510400.pdfIn PDF document text
    • http://ck-kutnahora.cz/gais/image/file/17718935862.pdfIn PDF document text
    • http://intertravel.hu/_user/file/94564242627.pdfIn PDF document text
    • https://leise.ru/admin/ckfinder/userfiles/files/kunuluwi.pdfIn PDF document text
    • http://langmypham.com/luutru/files/lapeto.pdfIn PDF document text
    • http://ghibms.com/userfiles/files/12386766687.pdfIn PDF document text
    • https://hopclickhospitality.com/scgtest/team-explore/uploads/files/derajidobipalewul.pdfIn PDF document text
    • http://autoachtercamper.nl/userfiles/file/kaliwogoposuzatunifotugeb.pdfIn PDF document text
    • http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613b1a46cb955---fexuxobej.pdfIn PDF document text
    • 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_off0000dfb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB9 19008 bytes
SHA-256: a73763c077a781bb9cc7ca151f5772e7e7d25abf73ea371fd4d320f30d5b26cd
font_01_sfnt_off00011099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11099 10368 bytes
SHA-256: 67385c02de7a621789389a5799aa5d9830cf47b271fd1bd63e46941bd794cb1b
font_02_sfnt_off000127e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127E0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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