Malicious PDF — malware analysis report

Static analysis result for SHA-256 1410ee2dd365c9ea…

MALICIOUS

PDF

87.6 KB Created: 2021-08-07 09:56:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 3df7324ef79c2f67487cba83120c822b SHA-1: 3261a4fff998f91f1364ded4b638794963b708eb SHA-256: 1410ee2dd365c9eabc52fcc0c11c0e4ad1a0089cee7c078b20f516ef228254b0
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by a machine learning classifier and ClamAV as malicious. It contains a link farm hosted on compromised WordPress sites, suggesting it is part of a phishing campaign. The critical heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document's primary goal is to trick users into revealing sensitive recovery information, such as private keys or backup codes. No scripts were extracted, but the presence of external URIs and the nature of the lure point towards a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160a72ae1ccc42---49187336902.pdf In PDF document text
    • https://www.expoagrogto.com/wp-content/plugins/super-forms/uploads/php/files/nd8opli2hnfj1n7u8f28huviv3/81349309886.pdfIn PDF document text
    • https://www.lashharmony.co.uk/wp-content/plugins/super-forms/uploads/php/files/pimeioqt815kfruc598pkb97hd/vexivowefivug.pdfIn PDF document text
    • https://bacninhonline.com/webroot/img/files/6446699173.pdfIn PDF document text
    • https://upbfassadenbau.com/upload/file/minasijugokemel.pdfIn PDF document text
    • http://bigsvatcharasith.com/userfiles/file/topuramulevubezolibuda.pdfIn PDF document text
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8d6ea23bb0---jimuvawokapivugatimofaze.pdfIn PDF document text
    • http://criollo-cocoa.com/userfiles/file/75985445663.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b4b3d2ca528---xeweligumepizamifu.pdfIn PDF document text
    • http://scbczy.cn/up_files/file/20210723_115931.pdfIn PDF document text
    • https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/eac8ab2c841a52aec33550ac809c94ce/jevuzase.pdfIn PDF document text
    • http://sva-jeanroze.com/xmedia/file/vifum.pdfIn PDF document text
    • https://area34.info/wp-content/plugins/super-forms/uploads/php/files/hrtdj49fvar9jfl0vv5okjnpl6/rofulovilupasezijelanim.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/gr5dos8gj5l8dgig8t8evb4513/18864917501.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/ik6kprvk4mqgub5bt0mrm7d4s1/79159228918.pdfIn PDF document text
    • http://shippingengineering.com/files/ckeditorothers/didadipufewinowetomorazu.pdfIn PDF document text
    • http://crescentcarpets.com/userfiles/file/64303937191.pdfIn PDF document text
    • https://mimpiindah1.com/contents//files/84342407187.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16076c8f348f50---pemumulivodazevuwajije.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/7e1cnvkk94a4r0ptffn16uo0v3/lirolasojoduwuf.pdfIn PDF document text
    • http://e-hematologica.com/users//file/bililumokilufagigodixes.pdfIn PDF document text
    • http://jump360.co/upload/files/20210604135254.pdfIn PDF document text
    • http://xboxheerlen.nl/userfiles/file/pebezofukopuzazade.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=nokia+android+mobile+secret+codesPDF link annotation
    • 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_off0000f1c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C5 17216 bytes
SHA-256: d3e31b05636c2dccaac8214278254aebedf758f85e1ef94c84488a259e263164
font_01_sfnt_off00011ef9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EF9 10740 bytes
SHA-256: 39f87198cccd7bfcf5b5bacab404918228e11f5264e3cfe5f702e4ac8ff28ac9
font_02_sfnt_off000137a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137A5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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