Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0bdfd2f3406a4ce…

MALICIOUS

PDF

84.4 KB Created: 2021-09-01 21:56:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 13b86919544363b785d14d6c4b38fb02 SHA-1: f872faaa76088157201e93ecd5e8e40f98107f6f SHA-256: d0bdfd2f3406a4cea8c7107bccb1c0950921538302dc27e93761b7269ad600a5
156 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and link farm heuristics, indicating its primary purpose is to redirect users to external sites. Several of these links point to compromised CMS upload directories, suggesting a phishing or malware distribution vector. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://garglob.ru/uplcv?utm_term=all+cartoon+movies+in+tamil PDF link annotation
    • http://cobmedia.hu/include/fuxonu.pdfIn PDF document text
    • http://geose.ru/userfiles/file/27779416710.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/msgmbokikg0oh4i6ggj9e2fto9/musuja.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/0ac7d95adfd7da9660dbb7c0e0b6de2a/25171795032.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608f0eb4cedfb---givufeduwidebijalakelig.pdfIn PDF document text
    • http://aliceinformaticasrl.com/user/pages/koxetalepevefa.pdfIn PDF document text
    • http://microcement.ua/userfiles/file/57738508504.pdfIn PDF document text
    • http://www.loicadesacavem.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1608022d073e54---60582994732.pdfIn PDF document text
    • https://pernambucoimortal.com/imagens/files/lisomumatugisepomanuj.pdfIn PDF document text
    • http://bracyfamilyreunion.com/clients/c/c2/c2db1a97f769835965582c74015c7782/File/samavomed.pdfIn PDF document text
    • http://contactconfiance.com/files/files/91407365618.pdfIn PDF document text
    • http://elskenecologie.nl/files/49960283839.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/16836167547.pdfIn PDF document text
    • https://mosconi.net/userfiles/file/vilugozituweket.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/qjvbg03ljkbltu7or3nn55vckv/32347010326.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/qvnnolq025id45a5skg69p19ov/9925294341.pdfIn PDF document text
    • http://modellszerviz.hu/userfiles/file/31075531504.pdfIn PDF document text
    • https://angelsforwarriors.org/userfiles/files/68687115194.pdfIn PDF document text
    • https://livredart.com/ckfinder/userfiles/files/19027717570.pdfIn PDF document text
    • https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/903dd20e1c4d6209cdbcf2192b2c6e27/nipodejivewekepin.pdfIn PDF document text
    • http://pensjonatagat.pl/userfiles/file/narapokaroxujamogub.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/f6f99591f2f600cdcb7a6a34c8da6dd4/1152118697.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/b3125825ba99919aadd4949bdf6b629d/63803877235.pdfIn PDF document text
    • http://hiroshima-teishaku.com/userfiles/file/48331011189.pdfIn PDF document text
    • http://aiaato.com/FileData/ckfinder/files/20210616_B18D3FD15677AA8C.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

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_off0000e49e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE49E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fcb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB5 10436 bytes
SHA-256: cd46c97d8826d3c7604f06c3c51b82d8c1ca8f47bef6781e965a54f3c34b5366
font_02_sfnt_off00011469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11469 17756 bytes
SHA-256: 6d5e7423569ebb3a911ba84876470e68d9318fc5884351185862154efdfd3fd0

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