Malicious PDF — malware analysis report

Static analysis result for SHA-256 32976a3fa01aeae1…

MALICIOUS

PDF

86.0 KB Created: 2021-08-05 23:24:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 976b7d16d9ab6c33dbd31995879caba8 SHA-1: cb4bb904706c53720b2b67923071297afdc68641 SHA-256: 32976a3fa01aeae13d9cdcab48a648383328182c195521f2fa28308cd764d8d5
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to compromised websites, suggesting it is part of a phishing campaign. The presence of a 'download' button lure and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicate malicious intent. While no scripts were explicitly extracted, the overall structure and URL patterns are consistent with a phishing document designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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.
  • 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://medvor.ru/uplcv?utm_term=nds+emulator+windows+32+bit
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606f56b2e903d---rinaseren.pdf
    • https://aldurra.ly/images-editeur/img/file/nidotuzigelidotasurijixo.pdf
    • https://activepymes.com/pub/file/sajiwegeta.pdf
    • http://toddfamilyreunion.com/clients/4/48/482e924d5a052aa4a0c13eb8a30e0bc8/File/duroxupimotogalukemel.pdf
    • https://sanidom.pl/img/file/1145797724.pdf
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ae6e3b042af---56280430864.pdf
    • http://droprint.my/home/ququ4923/public_html/userfiles/file/97884321486.pdf
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/d313de7e13858df1e2981b68d1b999a4/20681830947.pdf
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080135459340---dimefo.pdf
    • http://asbazainville.org/userfiles/file/8411352714.pdf
    • http://kochi-mimoto-iin.com/TakamatsuClinic/userfiles/file/wotuwivomokejexifedaxogi.pdf
    • https://gites-les-bardots.com/userfiles/file/74104487615.pdf
    • http://babywagen24.de/userfiles/file/39941431560.pdf
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/c88bfdf63d67297c9f4e192e679832a3/fibebesinakosumixur.pdf
    • http://hncastlecable.com/d/files/67260295687.pdf
    • http://josephfellerlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/62795355112.pdf
    • https://perfectprojects.ro/userfiles/file/wilaxafukoviromosim.pdf
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160947cdc9d82d---78138601454.pdf
    • http://altelaw.com/uploads/image/file/jibalaferujujopubixap.pdf
    • https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/9ff565ad632715459c02ac6b6bcb50ae/pogerebevati.pdf
    • http://pallenberg-busreisen.de/uploads/files/59877049516.pdf
    • https://vetranhtuongmamnon.vn/wp-content/plugins/super-forms/uploads/php/files/64s7v5hd3h0i52vksq9rdqb254/58313982610.pdf
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/711d5da2a84c07b7a4ef10800e1dd90c/15739600389.pdf
    • https://binarbaidequipment.com/public_html/userfiles/file/19822832885.pdf
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4da982e496---91611568572.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed7f.bin
76503f42fdc9f2b73f08d33ffbf0f74e49511b933b22a4b4d0f34e1c0b8d203f
pdf-font-stream PDF embedded font (sfnt) at offset 0xED7F 16584 bytes
font_01_sfnt_off00011894.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11894 16792 bytes
font_02_sfnt_off000130ab.bin
2ccb3e008f5d93886b19ed45a30b1c6186ec8b3ef170332b1128ad11c283ae86
pdf-font-stream PDF embedded font (sfnt) at offset 0x130AB 11004 bytes