Malicious PDF — malware analysis report

Static analysis result for SHA-256 96702f56ecb1c67b…

MALICIOUS

PDF

77.6 KB Created: 2021-06-10 03:22:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 6c018e265ac6673a16e2ab2b38df6dfa SHA-1: 56577a4e52f32630bdd8156533a65e0d6bd872b3 SHA-256: 96702f56ecb1c67b614de1e31382768ad3abcdb6756634f021c0d22ed9816bc9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8745

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://queure.ru/uplcv?utm_term=ibis+paint+x+apk PDF link annotation
    • https://praward.tw/wp-content/plugins/super-forms/uploads/php/files/2c3736ae744089dfb272ec498adf3346/64796784456.pdfIn PDF document text
    • https://299-45.com/CKEdit/upload/files/reviparatulenaf.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/980efe009f48becf7471cb4426adef6b/28613423164.pdfIn PDF document text
    • http://gtshotel.it/images/file/29903754108.pdfIn PDF document text
    • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16094d0afda9cb---voxorubom.pdfIn PDF document text
    • https://www.erenang.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084aa7582440---balijafupijedizeb.pdfIn PDF document text
    • https://jjmassociates.com/wp-content/plugins/super-forms/uploads/php/files/ca82696ea4bc0a951a7832b079d5968a/98172049834.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac3d27c6209---kisotusetisuxamofomop.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/16091428f74ace---16278848606.pdfIn PDF document text
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16088398a59a7a---wunege.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/n051llpu1fqs01tt1f8ojk9n24/didekufexiluwoxubinedad.pdfIn PDF document text
    • http://cpbnatation.fr/fckeditor/userfiles/file/32090429469.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/16099bc6cc0917---77685660730.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a5a9268d8d---40921710444.pdfIn PDF document text
    • http://petukmahaaaraj.com/userfiles/file/46158493729.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eda3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA3 4896 bytes
SHA-256: 31855bc7ca7cf25cfdf57b01534055e31ee50f6f5b559b2b0e611f26db4077b2
font_01_sfnt_off0000fe54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE54 2332 bytes
SHA-256: c2d2ea8c7d85171e55cfb84224172dd0678b2fb401fe41a8a7ee063557722b6d
font_02_sfnt_off000108b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108B9 11804 bytes
SHA-256: 98379f239784aee96ca21d1c24bdcbad4be592fc544e97ba21af4f27e78f1b31

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