Malicious PDF — malware analysis report

Static analysis result for SHA-256 6702ed399926d0aa…

MALICIOUS

PDF

78.2 KB Created: 2021-08-12 09:57:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: ce3b809f14656d0b1051a52351f54925 SHA-1: bbbab3363cfa1e727a17fa07b121cf149c80b82a SHA-256: 6702ed399926d0aab7240fa7ffa9abb7e21162a596bc68955b66d45ea5a637ab
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It functions as a link farm, containing numerous URLs pointing to various websites, some of which are hosted on compromised CMS platforms. The primary purpose appears to be directing users to external sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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://coretry.ru/uplcv?utm_term=amman+tamil+mp3+songs+free+download+starmusiq PDF link annotation
    • http://kondicionery-ivanteevka.ru/upload_picture/file/63855489537.pdfIn PDF document text
    • http://vce34.ru/attachments/file/faxivarunifozan.pdfIn PDF document text
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/2fb9f48c5d9b4dc039a49bc51b45ba41/butaxomumomalusisera.pdfIn PDF document text
    • https://cardion.dk/gfx/fckimages/file/jadeximabisidubewijam.pdfIn PDF document text
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/b6fac2f40f3b73709b01ebb8d7e8ce4f/28745102236.pdfIn PDF document text
    • http://re-view.online/fckFiles/file/losebejijez.pdfIn PDF document text
    • http://saxons99.com/clients/5/5f/5faa49e4155ddd0d4faf97b0d7aa3dde/File/degugisudabodux.pdfIn PDF document text
    • http://sushiloverca.com/uploads/files/4534047953.pdfIn PDF document text
    • http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f35a9bc5ce6---51015272841.pdfIn PDF document text
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079436f062a5---divotakagorokirenov.pdfIn PDF document text
    • https://limmaginebistrot.com/file/45510177099.pdfIn PDF document text
    • http://tiszaladany.hu/upload/file/34345759175.pdfIn PDF document text
    • http://chayka-svg.ru/files/badudojukedipari.pdfIn PDF document text
    • http://acevina.com/webroot/img/files/80816424049.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/6f1205ae2be51f7d836aac00d613c247/28123101697.pdfIn PDF document text
    • http://orderbestwings.com/uploads/files/99875281732.pdfIn PDF document text
    • http://sungwoneng.com/upfile_editor/2021/files/53801496535.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/1aa0dafc4c09f274b50bf202a2eb703e/37941115682.pdfIn PDF document text
    • http://alexhofford.com/temp/files/file/boxakilawujuvujabizuv.pdfIn PDF document text
    • http://biosite.ru/images/news/file/88244023891.pdfIn PDF document text
    • https://ajwatravel.com/wheelmarine/userfiles/file/98301686352.pdfIn PDF document text
    • http://tumonjfk2020reunion.org/clients/f/fe/fe8b949e9fe7e5065ccade199761aacb/File/46215527215.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077f8ff252ba---fosuvubowig.pdfIn PDF document text
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160de00e861fc4---51336713731.pdfIn PDF document text
    • https://polandpools.com/contents//files/57257724360.pdfIn PDF document text
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/p63bfo5mfcddihjjel71b4f46s/11082736783.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_off0000cbd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD4 11324 bytes
SHA-256: 35cba19c198173125d2de33e819583f14aba93389fc61eebaa7fd157242f2e0a
font_01_sfnt_off0000e5ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5FF 16920 bytes
SHA-256: 617595213e55e1b06e0934662c5ef235e812b2c977edf77aee660e0da619f6eb
font_02_sfnt_off00011275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11275 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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