Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6e35d4217607405…

MALICIOUS

PDF

84.4 KB Created: 2021-07-01 19:59:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 6b02c3a173b0b5bf6734f7ccf1e2a5de SHA-1: 6aa37db6f9a28a38b17894025412751886ca752a SHA-256: e6e35d421760740546e494e1ac5e8bc4e58dcb60c1f77ff0d7c9ba5fcd19226f
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV, indicating it is likely a phishing or malware distribution lure. The heuristics reveal it functions as a link farm, directing users to multiple compromised WordPress sites and other domains. The embedded URLs suggest an attempt to redirect users to potentially malicious content, possibly for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.1139

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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://laborke.ru/uplcv?utm_term=is+it+possible+to+know+who+viewed+my+instagram PDF link annotation
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083f939817fd---63733697123.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2fcfe6de2f---bakuduwozajopo.pdfIn PDF document text
    • http://jamesirvinewedding.com/clients/f/f9/f947a18657f5d77a8fcd192ffd4ccf25/File/93632862545.pdfIn PDF document text
    • http://divapharma.com/uploaded/file/72332484502.pdfIn PDF document text
    • http://galluccifaibano.com/userfiles/file/mugene.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/9f33537e7233f4fdcaabb17c3c698e35/sofon.pdfIn PDF document text
    • http://extracam.es/app/webroot/arxius/file/suxigawinafanu.pdfIn PDF document text
    • https://cavalier-hundezucht.ch/userfiles/file/2453902727.pdfIn PDF document text
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/af751ed412a35cfd5083069ea684a2b4/73026281431.pdfIn PDF document text
    • http://jiangsutravel.kr/userfiles/files/20210608_090539.pdfIn PDF document text
    • https://tort-art.ru/userfiles/file/bajixiw.pdfIn PDF document text
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160acc150e4a52---xurin.pdfIn PDF document text
    • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/3170926ff24cf9b8a0c02e224be8054a/limabemofofup.pdfIn PDF document text
    • http://shqinze.net/admin/upimg/file///98220071728.pdfIn PDF document text
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/wobatoped.pdfIn PDF document text
    • http://www.halpellet.hu/userfiles/files/31294975843.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/a64d28d3d82e4fb8648940cac52610e2/78836836273.pdfIn PDF document text
    • https://carstenrath.com/wp-content/plugins/super-forms/uploads/php/files/ki3qi36mfpmh72o1ruejeqn1i3/86728555891.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609c775e87a42---13927847728.pdfIn PDF document text
    • https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/d049aa8bdd4d5bd9ac24d1fe9dccb743/tudagefexisenataz.pdfIn PDF document text
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/eu1os1gvvnhn1k3rahje6e2fan/jenazugikelutawoligifezum.pdfIn PDF document text
    • https://kaptenhoki.com/contents//files/48037586898.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/ffb1uj9chf1urn43f32ok2o3m3/17866897953.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b5e3c3b4ca9---84325374727.pdfIn PDF document text
    • https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/d115e345d31ccb3fc4c6f40d81cba50c/64548494991.pdfIn PDF document text
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/6041150b8a9e22f4e2a30f1520958629/33579078832.pdfIn PDF document text
    • https://marwaautorepair.com/nbloom/fckuploads/file/2457280572.pdfIn 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_off0000f044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF044 17432 bytes
SHA-256: 311ec96262b8a1d07f18a07bacb8c6666143e38c88aa47354ce3c45182e3824d
font_01_sfnt_off00011e2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E2D 11288 bytes
SHA-256: 9a88c599419820d0a3c14138b8e82119a495a188a4b65746170490a29c5fceb3
font_02_sfnt_off00013820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13820 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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