Malicious PDF — malware analysis report

Static analysis result for SHA-256 a00c59b22b64c6da…

MALICIOUS

PDF

77.1 KB Created: 2021-07-25 21:32:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 93c47ab4a2252c33e74f0e2b0a7b2d4e SHA-1: f1b619ab07693bacaa8454460793e0f8064655f2 SHA-256: a00c59b22b64c6da48b3228a24a074f6383cc294dbfa956fc50b7453a995e440
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of links, many pointing to compromised WordPress sites, suggesting an attempt to redirect users to malicious content. The ClamAV detection and ML classifier further indicate malicious intent, likely for phishing or malware distribution. The embedded JavaScript is likely used to facilitate the redirection or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

Heuristics 7

  • 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.
  • 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://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/25397d5e9de16f0ea3d4120e7daa7003/91565037147.pdf In PDF document text
    • https://xn--80apefbdm9ah5g.xn--p1ai/userfiles/felaloginiterelirun.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/b970deacf8bed036d5f0b0538f3e163b/28270603489.pdfIn PDF document text
    • http://gaishachuukobuhin.com/js/upload/files/19172543305.pdfIn PDF document text
    • https://sokolzgierz.pl/web/uploads/files/xoxurukaxoli.pdfIn PDF document text
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1606c86cd13efe---vozajedulajojadejekij.pdfIn PDF document text
    • http://naturalmis.com/userfiles/file/73301715238.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d4d44818bdc---32398471167.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c8e86ed6420---mukedoponekeduvo.pdfIn PDF document text
    • https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/392pdrp7hket9nbd5u6lto7out/64790150972.pdfIn PDF document text
    • http://chocoenglish.com/_UploadFile/Images/file/kijekesekelipowutanivez.pdfIn PDF document text
    • http://www.christianhouseshare.com.au/ckfinder/userfiles/files/61054948932.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5b613d3d6b---faravixoma.pdfIn PDF document text
    • http://driscollandgibson.com/images/edit_images/file/junezajejamekif.pdfIn PDF document text
    • http://anandtouristcorporation.com/uploads/86027661421.pdfIn PDF document text
    • https://frontlinetherapist.com/wp-content/plugins/super-forms/uploads/php/files/44bf7ffd879a2dcaa8a42904868d5260/22781112695.pdfIn PDF document text
    • https://tramhuonghanoi.vn/upload/files/36327540620.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f38b882ca2---mudiku.pdfIn PDF document text
    • http://dxczx.com/ckfinder/userfiles/files/20210710_091102.pdfIn PDF document text
    • https://www.northernillumination.com/wp-content/plugins/super-forms/uploads/php/files/cc43f72c58446dd98a0243f9b375a422/vidasijajebejawazifamu.pdfIn PDF document text
    • http://chromoink.com/updates/file/vakumut.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/1607cdca6538a0---64411488771.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=sin+senos+si+hay+para%C3%ADso+temporada+2+cap%C3%ADtulo+64PDF 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_off0000c409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC409 11496 bytes
SHA-256: b9757759730af89a17f2dedbf5cfd7624213d700682a26b369dc9d46875820fa
font_01_sfnt_off0000df1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF1A 17332 bytes
SHA-256: e3442277edfef972b7e149f7e303c8281c997a354b1a204f26ea2ddd98241988
font_02_sfnt_off00010b33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B33 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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