Malicious PDF — malware analysis report

Static analysis result for SHA-256 26234baec30ffc0e…

MALICIOUS

PDF

189.3 KB Created: 2021-06-09 13:48:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85a74d751d4a6d6ac0da44a357052b35 SHA-1: e182419432be1c7dd33a7790db9f57f7bb5c4f64 SHA-256: 26234baec30ffc0e31abd0a1459927e2c3d69978a3310bdef20679340a81935c
164 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and a link farm pointing to compromised WordPress sites, suggesting an attempt to redirect users to malicious content. The heuristic firings and ClamAV detection strongly indicate a malicious phishing or trojan delivery attempt, likely disguised as a game download lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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.
  • 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://smidgel.ru/uplcv?utm_term=just+dance+2017+wii+download
    • http://www.irrv.org/uploads/files/16269365210.pdf
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b97e4186d92---26530161895.pdf
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/16071654e8bdd5---mozozobadavatofeje.pdf
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a1f03cd9b1c---74997964392.pdf
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/e85d74570b297507ea12827e231f1fac/4406400366.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609053b3a67fd---40209090651.pdf
    • http://aldo-ins.com/userfiles/file/69328170283.pdf
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16071d7865d869---tafetoterukurupodu.pdf
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609c02f1a82bc---16728629836.pdf
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/e4101aaa29b1d390068f57a94640bd2f/33234289647.pdf
    • http://perles-del-beya.com/userfiles/file/11504838499.pdf
    • http://jagatjyotischool.org/jagatjyotischool/userfiles/file/39288457221.pdf
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/080484096259365b9df9b7313ab729e4/nuzajaragunajopetobep.pdf
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/3fd3630a67592f31e10506dc44cfab54/53972873039.pdf
    • http://broadviewlibrary.org/uploaded_bvlib/file/tiwitatedajodudezotuk.pdf
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160723927755b2---viwimoterofejigebupaloxiv.pdf
    • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b50fe5ea90---fukiwasibewakulozanujad.pdf
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609084115c160---jowomibipewurutivedikam.pdf
    • https://octvads.site/js/ckfinder/userfiles/files/96555731853.pdf
    • http://www.opentle.org
    • 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://www.gnu.org/licenses/gpl.html
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00028290.bin
e9dcae5ad218a2c60f993b0c5bfa1f340a1f2c97a8b038fb09a5aede192dc3d7		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x28290 12412 bytes
font_00_sfnt_off0001b5ee.bin
b3748908fd811057e2baacdd56f8e6dd65eb7a5628781b32641633426d8cf450		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B5EE 63588 bytes
font_01_sfnt_off0002704d.bin
b2ab7fc395e9c0c35873adb98ecdc632cfebac7326098cabf5604bd394a08f7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2704D 5324 bytes
font_03_sfnt_off0002a55c.bin
c613b7bbade14d658d36350550cbdcedd6833ca0c5422a56ab90ea8bdcc4deef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A55C 13468 bytes
font_04_sfnt_off0002d0e7.bin
8d7e31e2e03728868901c6c2a1e6654f716243362c6617c1a1d8ed01d7a237b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D0E7 16268 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.