Malicious PDF — malware analysis report

Static analysis result for SHA-256 26ac284b2f5f9c9d…

MALICIOUS

PDF

77.0 KB Created: 2021-09-07 21:16:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 76ccc90461747f46087a44be38dfd0ff SHA-1: 01864d2c4737fba91257ca066daa0020b3acab60 SHA-256: 26ac284b2f5f9c9dacd8e0044a2a2ec647244d7d8da93cdf99fcdf466397f66f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many of which appear to be hosted on compromised CMS platforms or disposable domains, suggesting a phishing or credential harvesting campaign. The embedded URLs, such as 'https://allytemp.ru/uplcv?utm_term=ram+mandir+case+judgement+pdf', are likely used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9827

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://allytemp.ru/uplcv?utm_term=ram+mandir+case+judgement+pdf PDF link annotation
    • https://ladangmimpi.com/contents//files/mukisemuvewumakerevog.pdfIn PDF document text
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160db71211d8c2---lolupotip.pdfIn PDF document text
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079426b7e2ea---guropibenu.pdfIn PDF document text
    • http://copelandreunionla.com/clients/6/66/66f6f3de7053633686652f51c4c00696/File/12693575631.pdfIn PDF document text
    • https://marblobaths.com/app/webroot/img/files/76545810139.pdfIn PDF document text
    • http://anhuizhkj.com/upload_fck/file/2021-7-31/20210731091059559642.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/eb509ce3ca910880a7da59c12de515f3/wonamadizijivamugul.pdfIn PDF document text
    • http://contextuae.com/resimler/files/25260913365.pdfIn PDF document text
    • http://www.ecvbrass.ch/user/web/file/tolili.pdfIn PDF document text
    • http://peaceinsrilanka.lk/userfiles/file/bibivewupagopalowadud.pdfIn PDF document text
    • http://ogbchurch.com/clients/880797/File/sebakobefafigozozutofufi.pdfIn PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/160de820c6b183---25489914779.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e4de11f50f---43472161985.pdfIn PDF document text
    • http://klimagra.pl/images/wysiwyg_img/file/kapijaturejexiwuvak.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/16074c65a404cf---kerobugemuwo.pdfIn PDF document text
    • http://tecnoservizi.com/userfiles/files/siduw.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9aaad50e32---jafelubutefulumovas.pdfIn PDF document text
    • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/a4ae847148c42b0410517e84c31efa3e/mijote.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089a65ad0a28---voruximapenigetisujax.pdfIn PDF document text
    • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160b26fe87d6c0---6884417188.pdfIn PDF document text
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/4lnu76ib9b3p4hf2asknlfl89i/polobojexibizaxulodoveme.pdfIn PDF document text
    • http://alimentosldm.com/userfiles/file/70683938069.pdfIn PDF document text
    • https://xedulichhaiphong.vn/images/news/files/risusaxuwulateronek.pdfIn PDF document text
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/1609b8e34bcb0b---78504130588.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f4bcd22540f---16767432115.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/b53cf7ef28bb14731a2860d021557a99/8577722076.pdfIn PDF document text
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/0kq2loket8l2rb1ck58t3b9e79/dulevupakupuv.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_off0000c680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC680 17944 bytes
SHA-256: e62ed7d6b6460c9508444ac1c1c4347535ea2ed32ee5467b95cc4bae68eb72b2
font_01_sfnt_off0000f4a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4A6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010cbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CBD 11072 bytes
SHA-256: 7b4afb31f5ce1b52ec62d24e3d24c443bcd4b5ae88bdb9f58b6363b73f1967b0

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