Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2e9d35239f6a4e7…

MALICIOUS

PDF

82.4 KB Created: 2021-08-18 17:27:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 571352afd3f405b1c2c05583e47cad7b SHA-1: 6c44f1a83ae10dec69391da740b7d3f760dcd897 SHA-256: c2e9d35239f6a4e75add884b99e8f7f131edd92badf5335a2d3060d31e21fb00
176 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. The document contains a lure to enable macros or editing, a common tactic for malware droppers. It also features a link farm with numerous URLs pointing to potentially compromised websites, suggesting an attempt to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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://ketchas.ru/uplcv?utm_term=microsoft+excel+formulas+tutorial+pdf+free+download PDF link annotation
    • http://cityfate.com/files/files/93843538129.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/d1fdcae9729849f355d56b7719813c0c/tenevugapa.pdfIn PDF document text
    • https://catwalkdogcome.com/editor_upload_image/file/27936588715.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ef1485d64e---63733660328.pdfIn PDF document text
    • https://k-barrierfree.com/FileData/ckfinder/files/20210708_4B9AAF87FFF8A9FB.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/efbff74fac45cd7719bb1dafa72a6bb0/fubisuxifuxefulukupifuno.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/160db6ae8d35b1---melujeke.pdfIn PDF document text
    • http://hongdacable.com/d/files/roxone.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16082790276f53---73913451650.pdfIn PDF document text
    • http://hpmcfamilyreunion1968.com/clients/83891/File/sepud.pdfIn PDF document text
    • https://sardavetri.it/userfiles/file/8515151751.pdfIn PDF document text
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/f505bfb65e8d49838b552b8d1db3ca0b/77667869618.pdfIn PDF document text
    • http://women-for-marriage.com/ckfinder/userfiles/files/gifetizesirurilagapifid.pdfIn PDF document text
    • http://seashoresilverlabradors.com/clients/4/48/482fd9669fb3260065120a60ccac5e48/File/98666413818.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/v3topi873vevvngh0lfimkvk5n/17080557056.pdfIn PDF document text
    • https://kohphanganhotelandtour.com/userfiles/file/gusugulupepifuta.pdfIn PDF document text
    • https://khangle.vn/uploads/images/files/71686624220.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fa493b6931---gobijowajojoziraguvinig.pdfIn PDF document text
    • https://vandolderskb.com/images/usr/tiwumonovefofer.pdfIn PDF document text
    • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/7c0cf508573a1da233ca6bdc4fa3c718/zujadodomaz.pdfIn PDF document text
    • http://savages.lu/imagesRTE/files/famobikosuxokiwuzibiwuter.pdfIn PDF document text
    • http://autoneza.cz/UserFiles/File/77984563358.pdfIn PDF document text
    • http://gphs100.com/clients/e/e3/e3ed30f4e85b1ff1e74f61348c82e8eb/File/8103224028.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_off0000de4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE4A 11064 bytes
SHA-256: 74b099a48c7c36a09661c4a3c2e86b50fc09e714539c8ed70730c577f828f978
font_01_sfnt_off0000f81f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF81F 16740 bytes
SHA-256: a5a491ddec73379c1da3da7c98e9a717160e8e00735c702e05b19982cb097c04
font_02_sfnt_off000123d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123D3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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