Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e117bd86986c616…

MALICIOUS

PDF

83.8 KB Created: 2021-09-16 04:52:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 3eb778e817546d80ac946f660d5bafe7 SHA-1: cf55eb004a9f2c95dd657439961e62674411402a SHA-256: 0e117bd86986c616ea0b3a1ad4c98f9494ae3722636d35929aeb6f266558b751
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to potentially malicious or unknown domains, and is flagged as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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
  • 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 http://toanthinh.vn/webroot/img/files/lovodowobesu.pdf In PDF document text
    • http://luchetti.it/userfiles/files/8380803076.pdfIn PDF document text
    • http://foto-recepty.sk/images/fotky/tititaluwun.pdfIn PDF document text
    • http://waterlootour.com/FileData/ckfinder/files/20210907_2617802AFFCA9378.pdfIn PDF document text
    • https://vico-domrep.com/ckfinder/userfiles/files/93243462067.pdfIn PDF document text
    • http://cpviettin.com/upload/files/61365521207.pdfIn PDF document text
    • https://am-system.eu/ckfinder/userfiles/files/74093052199.pdfIn PDF document text
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/0ol2t4b2p96t3cf1i623l8243q/pazefejonoferixekudojeso.pdfIn PDF document text
    • http://japanbizkorea.com/userData/ebizro_board/file/xurovorupuloxadazoxim.pdfIn PDF document text
    • https://bursakaynak.com/userfiles/file/25575358826.pdfIn PDF document text
    • http://fortwashington.abwingsmd.com/uploads/files/22899679909.pdfIn PDF document text
    • https://mimpidia.com/contents/files/69618798269.pdfIn PDF document text
    • http://mamnonsaokhue.vn/app/webroot/files/ckfinder/files/japoxonomikijomozafefaj.pdfIn PDF document text
    • http://www.casasemio.com.br/ckfinder/userfiles/files/tuxotaxinuwiba.pdfIn PDF document text
    • http://graficaeformazione.it/userfiles/file/44365239444.pdfIn PDF document text
    • http://hkalc.com/userfiles/nadute.pdfIn PDF document text
    • https://nusamulticentralestari.com/Uploads/userfiles/files/luzadusalofi.pdfIn PDF document text
    • https://nusamulticentralestari.com/Uploads/userfiles/files/xekesaziwilivenut.pdfIn PDF document text
    • http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/2f91ec0f76b953e6eadf716ab17237c1/zetojedugotolobufovesari.pdfIn PDF document text
    • http://www.libroparlatolions.it/backoffice/ckfinder/userfiles/files/67936269664.pdfIn PDF document text
    • http://murielbellhomes.com/userfiles/files/xukefidimif.pdfIn PDF document text
    • http://keralastatetailorsassociation.com/userfiles/file/juxipakiviraxagovojabopu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=android+10+clone+appPDF link annotation
    • 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_off0000e3b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B3 10396 bytes
SHA-256: 22f335318e428da49503396dc715dae88b5e0f856be305b7a9483f8c95384407
font_01_sfnt_off0000fb4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB4D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001135f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1135F 18056 bytes
SHA-256: 3d195a0dadf2b791bc50805d8fcdd30073b5b1476f3a85d81f917ffa3edd6e56

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