Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fc7b1fd3ce20a5f…

MALICIOUS

PDF

131.4 KB Created: 2021-08-28 22:27:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: d5ad7ad4bbb706cebde4d048a4a3f3fe SHA-1: 4e7f5f6c379df7fea8a1df3a4570504bef9c2d9e SHA-256: 2fc7b1fd3ce20a5faff09d95d3d92957aa5aafc35a6088cc7a23d3e870d6e672
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to potentially compromised websites or disposable hosting. The primary purpose appears to be directing users to external resources, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 6

  • 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.
  • 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://garglob.ru/uplcv?utm_term=download+game+god+hand+ppsspp PDF link annotation
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb433b1e4b1---tiseligarisixixis.pdfIn PDF document text
    • http://caffepontoni.com/uploads/file/kirovubedebe.pdfIn PDF document text
    • http://marsalanoleggio.it/userfiles/files/nekovawulobakolunodokitu.pdfIn PDF document text
    • http://eurekaelearning.com/upload/news/file/89215838683.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/602102c3d02737482d6f9f8b46422323/xuwigiroworowarobudos.pdfIn PDF document text
    • http://cosonhuath.com/hinhanh_fckeditor/file/ropedarowokesufafitiro.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/f829751dea3164efe850df1983c5241a/36314840130.pdfIn PDF document text
    • http://chnli.tw/CKEdit/upload/files/59463885318.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609cbaf6b3aff---32910616422.pdfIn PDF document text
    • https://rosewoodcity.org/nbloom/fckuploads/file/97962812765.pdfIn PDF document text
    • https://gulfsupremesa.com/ckfinder/userfiles/files/zizotuxumema.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/1j50jpmsta8mper3f4h0jehh6d/62026167297.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/3c61899682f10c0bb42ad342e3028f22/xululajupupozidiwumerif.pdfIn PDF document text
    • http://www.cda.org.hk/ckfinder/userfiles/files/fujalokes.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/e94da9e748e786fb3ab4b33b17211a98/jetalilenuwotavoguj.pdfIn PDF document text
    • http://emachn.com//data/attachment/file/62974797682.pdfIn PDF document text
    • http://starcity-vinhomes.vn/app/webroot/img/files/56445169052.pdfIn PDF document text
    • http://tantex.org/tantex/tantexuserfiles/file/xixezejabagu.pdfIn PDF document text
    • https://caravanandre.it/wp-content/plugins/super-forms/uploads/php/files/d7a406a1fb55a975244b7cf075e81120/mifopokef.pdfIn PDF document text
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/1606f5406e0a62---robosofepakupeluberutorus.pdfIn PDF document text
    • http://lroundup.com/clients/d/d7/d7466da0ad72d96b64793f89c518a0d9/File/vulekanixiwubite.pdfIn PDF document text
    • https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607133eb6eecf---ruxebofugaxeledotomuzitu.pdfIn PDF document text
    • http://frutapac.com/ckfinder/userfiles/files/dopebenagiwafatupejare.pdfIn PDF document text
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608477b2e4381---71677765155.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_off0001a0d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A0D6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001b8ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B8ED 10636 bytes
SHA-256: 4d5c95b0e3632797053fbfcc38f628ac880c0e2acb8a832d72a70c10c9cc391c
font_02_sfnt_off0001d0e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D0E1 17864 bytes
SHA-256: 59c16663a412856141c96fb2f72f44180ee5834bfb1623c294ab95390e7180bc

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