Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eda96bb7f3adfdd…

MALICIOUS

PDF

83.1 KB Created: 2021-09-05 19:38:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 2ef114df136e599d1c68da376b346d69 SHA-1: f4d3f02a84a3a67ebea559ccd1a4945c74fb3dae SHA-256: 1eda96bb7f3adfdd9732c6de121a550d80e1046ea8536e150506292a9494d58e
154 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. It contains numerous embedded URLs pointing to various domains, some of which are hosted on compromised CMS uploads or disposable hosting, suggesting an attempt to lure users to malicious sites for phishing or malware delivery. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6964

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 http://gasasosong.com/upload/fckeditor/file/sojebuzezexesagamudi.pdf In PDF document text
    • http://jump360.co/upload/files/20210616230155.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9cf668d7fe---bomumex.pdfIn PDF document text
    • http://xmzhj.com/UserFiles/file/18235920046.pdfIn PDF document text
    • http://sinproval.it/userfiles/files/67076287654.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160e497d45d79a---fupomuvinobi.pdfIn PDF document text
    • http://vipforiraq.com/userfiles/files/89005056970.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/hg0aiksccdd1fj6r9doavvvjp7/lefugele.pdfIn PDF document text
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/160db9dce74ace---xugodokawutozalozuzuj.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/c811fce5aa2192a44e7814fdf7712ab3/poxagazojife.pdfIn PDF document text
    • https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/b2be4713b66289b228069933d5907e1f/85418847463.pdfIn PDF document text
    • https://diaspoassur.com/wp-content/plugins/super-forms/uploads/php/files/270308a84e1211a3ad7b212705753337/27863235758.pdfIn PDF document text
    • http://espokebar.com/uploads/files/bugelorepexixavifurukigaz.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9192976758---rexijuwunopijiveba.pdfIn PDF document text
    • https://tekmaker.com/upload/files/51991620558.pdfIn PDF document text
    • http://bayanairag.com/uploads/userfiles/files/xapedilowulowames.pdfIn PDF document text
    • http://contentworks.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606e2193f297d---natewunukipokemoja.pdfIn PDF document text
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160beb586c0e6f---nepota.pdfIn PDF document text
    • http://sivam.pl/files/file/73241833652.pdfIn PDF document text
    • http://dmkaudit.sk/101/upload/file/gemalapir.pdfIn PDF document text
    • https://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/37333441559.pdfIn PDF document text
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee2ec88c4ec---98592461571.pdfIn PDF document text
    • http://tpt.taipei/asset/uploads/files/sijuwiwesifudaxeritoxobuj.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/160879d7442703---vedurogevupejopojaw.pdfIn PDF document text
    • https://monyetmesum.com/contents/files/jizoj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=hypernatremia+treatment+guidelines+pdfPDF link annotation
    • 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_off0000ee4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010662.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10662 10928 bytes
SHA-256: a8e1abf3f992d5346649598bc5d7cc9bcb1843587c989ae1f0723413774a74d7
font_02_sfnt_off00011f6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F6A 19048 bytes
SHA-256: 81f26ac9f9e6be61e92c7b8fc70e881316429a5731b6335ed01cd7d4da6fb273