Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c19f4ee29575689…

MALICIOUS

PDF

86.0 KB Created: 2021-08-30 21:35:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: b1fa33061b4d585dcfd17b862f8e3ea1 SHA-1: 9be161d24fa09311cacc39abbc739050af7f2830 SHA-256: 0c19f4ee29575689a6ba0151c9ba6d7be51e4d5a2bf6bf239fb854a7a6b41c4d
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, many pointing to compromised WordPress sites and disposable hosting, suggesting a phishing or credential harvesting attempt. The critical heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document's intent is to trick users into revealing recovery secrets, private keys, or backup codes. While no scripts were explicitly extracted, the presence of multiple external links and the nature of the lure strongly suggest a phishing attack, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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://nomylo.ru/uplcv?utm_term=catcher+in+the+rye+chapter+11+quotes PDF link annotation
    • http://contextuae.com/resimler/files/vekukixox.pdfIn PDF document text
    • http://seksdagen.nl/userfiles/file/bovifopufifupawiluf.pdfIn PDF document text
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/52gda8bh9p4kque8fl8iu5b3ap/jesijonafomaru.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f953b8d129e---debewakunigef.pdfIn PDF document text
    • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/ul74j666sbi35t5mue4gjf3qom/11328592898.pdfIn PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160edcabc6f0b6---kipajilovuti.pdfIn PDF document text
    • https://sieompaysdebray.fr/lesiom/txt/imgadmin/file/38317964941.pdfIn PDF document text
    • http://radio-salsa.fr/php/rs/filesupload/file/sumubobogavikejap.pdfIn PDF document text
    • https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/1fac038d16dccc3af200b0656e2d7d55/68195743328.pdfIn PDF document text
    • https://projetovm.com/uploads/files/65651597357.pdfIn PDF document text
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/b37b6d6ad618b2e30133e078762f1de0/sesagaxum.pdfIn PDF document text
    • https://albizy.com/ckfinder/userfiles/files/69697901717.pdfIn PDF document text
    • http://allnatureint.com/userfiles/file/26200280692.pdfIn PDF document text
    • http://benevolo.it/userfiles/files/zemuvarogobajefexubuvuma.pdfIn PDF document text
    • http://www.portaldasfreguesias.com/portugal/vianadocastelo/vianadocastelo/geraz_do_lima_sta_maria/ckeditor/ckfinder/file/43746511668.pdfIn PDF document text
    • https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/939a379bc89bef415cff7894436312bf/vudigefi.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//gulaki.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160c9f5800af18---paruvufa.pdfIn PDF document text
    • http://fonnepal.org/userfiles/file/79821405309.pdfIn PDF document text
    • https://envomask.com/wp-content/plugins/super-forms/uploads/php/files/398f10a95422094694ccf70ba4746779/96897671047.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/8bfcdbc920ab81499adb525d8848effc/63460056884.pdfIn PDF document text
    • https://www.northernillumination.com/wp-content/plugins/super-forms/uploads/php/files/f271e9991854a841459866251e465d47/benibaviliforitowolipef.pdfIn PDF document text
    • https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/36344976208fc1308a7c00cf9aa5ae5c/xugixivosomiloki.pdfIn PDF document text
    • https://tlpnw.com/wp-content/plugins/super-forms/uploads/php/files/a3d18eb01ac840c9a370b0f34027c5a6/mexibakibujireg.pdfIn PDF document text
    • http://sozopolihills.com/userfiles/file/62053502865.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_off0000eb3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10352 10868 bytes
SHA-256: 37de85ccf73476ca424470136d8012f5637cd4a068b17a507f85792a1651b7e1
font_02_sfnt_off00011c7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C7E 17820 bytes
SHA-256: d487d1ee74988b51ead10e9600e5dc9f4de03123d61068decae76e2dd21cdc14

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