Malicious PDF — malware analysis report

Static analysis result for SHA-256 5744fbb650b38751…

MALICIOUS

PDF

100.3 KB Created: 2021-06-25 22:04:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ede65a2788e99ec74c0f360cc2949128 SHA-1: 831936d57da7f0ed580886c6cf35681e656b1487 SHA-256: 5744fbb650b3875138be8c445c1802634dfe72719fc8f63d6047466bf4e864f5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier, indicating malicious intent. It functions as a link farm, with numerous URLs pointing to compromised CMS uploads and disposable hosting domains. These links likely serve to distribute further malware or lead users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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 http://ucity68.com/clients/e/ea/ea220da86df44fb0ae3b7c8e8295ccc1/File/kiwulaxutag.pdf
    • https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/1mqgrdvd9uhmnsfjueb0scaaee/wiganapesug.pdf
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16086d2dbd6461---86913237252.pdf
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac116e4a997---77886627173.pdf
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/27f6colv2990dsnk1bsh3i8kc5/77326793366.pdf
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/nsbbkovrm3ndnq267250co829a/jovotefabuxerupadas.pdf
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/kgll17f6dih10ilfccjv3djkm1/bamurujunexabipevonuruwi.pdf
    • http://modamoda.nl/uploads/pic_lib/file/mabagozuwigawofokinikan.pdf
    • https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/3d74456e7066fa1188768b424cba231c/24338781486.pdf
    • http://www.gonouvellezelande.com/files/vazevu.pdf
    • https://amerismithenterprises.com/wp-content/plugins/super-forms/uploads/php/files/034c0b723f93cef1364c5a98f7a3785b/jukeveji.pdf
    • http://flagrant-desir.com/userfiles/file/sisikeredawe.pdf
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aad899e23a3---faribu.pdf
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/58572c111eed454230d68ce64f553e3d/wowelosizazemikuvakad.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afdb196bf06---vokasojo.pdf
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160ab99be48140---kuzebi.pdf
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/16090e172005b4---gosodugowesujap.pdf
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fbfbc16de6---wukikepegixod.pdf
    • http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1608112381deaf---tuziputiviwekupi.pdf
    • http://cosmic-kino.ru/sadm_files/vorovoxeburegotuvizodup.pdf
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160763facc3817---netenajawisokuzuxisikisa.pdf
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/9u2t6uaau4g1o45r72dgu1o6u7/25038867287.pdf
    • http://vitali-schulz-eiskunstlaufen.de/userfiles/files/36504084455.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=vaccine+recombinant+dna+technology
    • 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_off00012597.bin
2beda234bc453227b995178a443ff7adb8867b43e11cce3601d9b8a74a31b3ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12597 17460 bytes
font_01_sfnt_off0001530f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1530F 16792 bytes
font_02_sfnt_off00016b26.bin
88af7cae41e543637303b85a5ce77187c08755a9079a7f8d8924e6e55a5634dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16B26 10872 bytes

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