Malicious PDF — malware analysis report

Static analysis result for SHA-256 2948584e411537c1…

MALICIOUS

PDF

75.1 KB Created: 2021-06-12 02:11:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da54fa783b229ea61c7d69d0d0059f8d SHA-1: ddfe58b3d4782210adff7e6d1085a7e8e35a10ff SHA-256: 2948584e411537c15329cd4077034ecc396a830686893821c79b993ea9cfb979
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the links indicate a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=jeevan+anand+815+premium+chart+pdf
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/18f09313d112b643af8ba9cf7893338d/nagox.pdf
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/rgmvth922le8kof6bn307utit5/vufoliva.pdf
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ff500de0fb---nafinunifupakesonen.pdf
    • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1607540be350e3---70965380679.pdf
    • https://vgi-vn.vn/app/webroot/img/files/gasonabovavexe.pdf
    • http://www.scsi.coop/wp-content/plugins/super-forms/uploads/php/files/d16045b2a71ec5e94ad4c1cc97e44cdc/xaveporidupumipupajiwuraf.pdf
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/265edcd62c04a6a0d806c50c4581b36b/17187404006.pdf
    • http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607668d8095c4---navumilozatusuzewemu.pdf
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/12csp7ar2k77qru450u9dhi5iu/39536126589.pdf
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160bee49c6a0ab---50106177778.pdf
    • https://lightingsystemscol.com/wp-content/plugins/super-forms/uploads/php/files/0efcc7bfd91a399dbfe8f51ebafa400f/zudelap.pdf
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609877e75825d---64931457180.pdf
    • https://agrilaui.com/userfiles/file/xozuvilij.pdf
    • http://donghocasiochinhhang.net/uploads/userfiles/file/31492855167.pdf
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/53154dd17630f0c0d6d6602ab4a94ac4/vurirodasi.pdf
    • http://luvnchrlysenglishtoys.com/clients/861429/File/kajupo.pdf
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a42ff68a7ba---1587871074.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5e7.bin
4617e42362623f13374add5c958558ed651103ad2102b573ef671fe44ce1b614		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E7 5604 bytes
font_01_sfnt_off0000f8e5.bin
23298d33833f2fd1cac2b27198aa882d706d93bd7b4095aca19db7f3d182b88b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E5 10776 bytes

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