Malicious PDF — malware analysis report

Static analysis result for SHA-256 58ade485926a224b…

MALICIOUS

PDF

76.2 KB Created: 2021-06-29 08:24:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 05b0b6e4724fda31cbef9d719931f8b4 SHA-1: 3f365190d02883510f812c820000f9da57937d91 SHA-256: 58ade485926a224b1a5d614ff1b73332b55ab0619d6ca5965b0d5b31dcff73ae
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected by ClamAV as a phishing trojan. It functions as a link farm, containing numerous links to external websites, many of which appear to be hosted on compromised CMS platforms. The primary purpose seems to be directing users to potentially malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4750

Heuristics 5

  • 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
  • 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://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/9b23463b9ae822a1546aca4e9f6a1250/kidakosurabavozejokov.pdf In PDF document text
    • https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f8f651037c---67612135273.pdfIn PDF document text
    • https://grancom.by/upload/docs/51837614891.pdfIn PDF document text
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160da3eb94c91d---71563388909.pdfIn PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/3894a726e087cd0f9ccd920ad43f67d8/48736820989.pdfIn PDF document text
    • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/4898b8f290ef0e60e2de38d6e0efacc2/93751169008.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160786654ebacf---nogoregixolabajelefasiles.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/1607ca970ba6eb---gatenatewunijepikelopoket.pdfIn PDF document text
    • http://interno-kazan.ru/upload/files/buferuzoxolubaf.pdfIn PDF document text
    • https://bhsbeacon.com/FCKeditor/file/nakugerofejof.pdfIn PDF document text
    • http://mtlebanon62.com/clients/5/5e/5ee551a8be14a26d7d76bc5e90dd1372/File/84285481990.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d981eba519---futuwemi.pdfIn PDF document text
    • https://paulins.se/anvandarbilder/178/files/wupejob.pdfIn PDF document text
    • http://alt-1c.ru/userfiles/file/92247576324.pdfIn PDF document text
    • http://ptairsupply.com/userfiles/file/bibemapebudapisan.pdfIn PDF document text
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/ouopite2mt0rkehqquhfu0h4e3/42878298138.pdfIn PDF document text
    • https://travelsafeway.com/userfiles/file/47134577082.pdfIn PDF document text
    • http://kaupa.cz/userfiles/file/lubaribiwekuwip.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b82b2b0b568---18754272512.pdfIn PDF document text
    • http://drairtools.com/ckfinder/userfiles/files/64364336323.pdfIn PDF document text
    • http://clarksville.net/wysiwygfiles/file/25338112683.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/3a4782c23b32c36b37641439678b079f/89804149693.pdfIn PDF document text
    • https://www.dolphinrfid.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd54b88a4a0---jekutodijujatedipotelawof.pdfIn PDF document text
    • https://ready4use.ru/uploads/files/41182592959.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070c8e889075---zireriw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=frequency+table+calculator+with+classesPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDB1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f5c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C3 16960 bytes
SHA-256: d8cc59a4c70a90e46354e898b99bff1842462c68a38c60e721397ca93d1e6308