Malicious PDF — malware analysis report

Static analysis result for SHA-256 d069440cddd65bbf…

MALICIOUS

PDF

79.7 KB Created: 2021-09-05 10:21:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 00ec32e11257a748da94b3eafbe3288f SHA-1: 17499648ca107e0bee72fbab5522c129ae109021 SHA-256: d069440cddd65bbfa220fdde7ecb19852852b3668f6373dca29c75fd60e1888c
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and exhibits characteristics of a phishing lure. It contains embedded JavaScript and a significant number of external URIs, many of which point to compromised WordPress sites or disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of embedded JavaScript indicates an intent to execute code within the user's browser.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://catamma.ru/uplcv?utm_term=pdf+convert+to+powerpoint+online PDF link annotation
    • http://ansatrans.ru/admin/ckfinder/userfiles/files/nagerezakudeli.pdfIn PDF document text
    • http://hanifeugur.com/image/files/kedimevituwagukadivomej.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16127713fa1832---48027334509.pdfIn PDF document text
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/8354670f508a8c225685e1da5c3d0a5e/xasamezan.pdfIn PDF document text
    • https://craftsmancuttingdies.com/wp-content/plugins/super-forms/uploads/php/files/c163acbb7fbe834819c3e9842481c504/xumurixa.pdfIn PDF document text
    • http://kondicionery-ivanteevka.ru/upload_picture/file/78375129345.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/im2iouapfnugcifujnerha7ub5/99856780778.pdfIn PDF document text
    • http://audiencefertilization.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/83760592987.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5d2b934b79---94055164391.pdfIn PDF document text
    • http://drprdesaihospital.com/uploads/76216571359.pdfIn PDF document text
    • https://nolimitscenter.be/peausitive/images/FCKeditor/file/binerinozuzogevugapetota.pdfIn PDF document text
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084ff3b6177c---xokizudagowufu.pdfIn PDF document text
    • https://vetregistr.com/ckfinder/userfiles/files/2232860557.pdfIn PDF document text
    • http://internationalnetworksolutions.net/files/In PDF document text
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/5f4b9ecfe5b3f4a1e030f2a4c00599a8/zetimuwepaf.pdfIn PDF document text
    • https://vipbeachhouse.com/uploads/editor/file/subarubemeza.pdfIn PDF document text
    • http://xn--90aoj0agf7cq.xn--p1ai/uploads/files/jowoguromegaditoz.pdfIn PDF document text
    • http://mrpokedb.com/uploads/files/dunirufenig.pdfIn PDF document text
    • http://tomei4x4.jp/js/upload/files/22340123492.pdfIn PDF document text
    • https://fo-prefectures.com/pages/files/51115363159.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608533f6345f4---suvanafu.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609278d6d97c3---zisijotap.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/16096e0b296827---49185459577.pdfIn PDF document text
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1610f3b7700210---sipemapugedodutemukelona.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_off0000d46f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD46F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ec81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC81 17440 bytes
SHA-256: f0805636621fbdfa111140c01bbc2ae648c3a1680ecdcdc4eb8ac2e0d5fb5cbc
font_02_sfnt_off0001199e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1199E 10436 bytes
SHA-256: ec13d149f79c8ba9284fd9699f80a0edb170ee72ef59e5c03e34ebfe20530bbf

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