Malicious PDF — malware analysis report

Static analysis result for SHA-256 60aad1266e0c408a…

MALICIOUS

PDF

205.4 KB Created: 2021-07-14 04:44:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: f05cf6acb9d811d9f24fbefde9e0daa3 SHA-1: e7403033294a2c945163ebb614c8db090ae51655 SHA-256: 60aad1266e0c408ad7140227ba9ca8d9bf76e5a9acc493b2a69ea330b5f75565
174 Risk Score

Malware Insights

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

The file is a PDF that contains multiple links pointing to compromised WordPress sites, likely serving as a lure for phishing or malware distribution. The heuristic 'PDF_SEO_UTM_REDIRECTOR_LINK' indicates an image lure linking to an SEO redirector, suggesting a phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the presence of external links and the nature of the heuristics suggest the PDF is designed to exploit vulnerabilities or trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9868

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://chcial.ru/uplcv?utm_term=rivers+in+belize PDF link annotation
    • https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160c78820b209a---zegajavir.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/0bd0626cada2941c2966578a85334a5b/musaxevobofofixijofosa.pdfIn PDF document text
    • http://stellamaris.cz/userfiles/vedusagi.pdfIn PDF document text
    • http://ourgans.org/userfiles/files/pozusuduwafodar.pdfIn PDF document text
    • https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/3d66399ede2c9cc392ba9d45b9750c9f/paramogapezuwura.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/160be2cdc19e49---99975483209.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b479221f696---zenalod.pdfIn PDF document text
    • http://cityhelps.org/clients/6/61/61afa7a028a8e04f14432b0fece6f2b0/File/faxoturorizomepuxutilo.pdfIn PDF document text
    • https://nepalipublisher.com/ckfinder/userfiles/files/24744264512.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/55af0818acfb708c49868f34f62bf587/63347814490.pdfIn PDF document text
    • http://livestreaming.group/wp-content/plugins/super-forms/uploads/php/files/0e6gtmeg86blkibh22t77n7on0fi3b1j/56298040051.pdfIn PDF document text
    • http://gesundimjob.at/images/content/files/47734544921.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/1606e5b9fc0723---ruvatop.pdfIn PDF document text
    • http://ghrnightinwhite.com/clients/7/72/721f26fb9237119891afe8d29dbdfc29/File/gidenapevokebevadadu.pdfIn PDF document text
    • https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/60e5ef33431a5c84ed6291b4b59f5d67/fevevoxujiwe.pdfIn PDF document text
    • https://tahitotfaluovodak.hu/ckfinder/userfiles/files/94956317348.pdfIn PDF document text
    • https://www.escon.it/wp-content/plugins/super-forms/uploads/php/files/42e3c19e9114d9739d4693469d0abf55/mikifutero.pdfIn PDF document text
    • https://go2germany.ru/files/file/zunorosavinuf.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc7f6713178---pogumijunijejonobanam.pdfIn PDF document text
    • https://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/9nmufbmvb7bk8sfjkoqkia60hd/fukewegek.pdfIn PDF document text
    • http://wagnerpc.com/userfiles/files/jonezorosakelex.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160709526a0b80---garinetifamuzetujo.pdfIn PDF document text
    • http://euro-ex.net/images/blog//file/67191955677.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002c904.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C904 10032 bytes
SHA-256: 317e95f7fb351c220bad567b1f9be639580eae55d9f191b2ccab8be7f97d8a60
font_01_sfnt_off0002df6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DF6D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0002f77f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F77F 18304 bytes
SHA-256: a7aa5db3070d692ad51c98b4c2df7a548165d184696f6124c17f7645d700671f

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