Malicious PDF — malware analysis report

Static analysis result for SHA-256 d917a96f8e960fd9…

MALICIOUS

PDF

79.6 KB Created: 2021-09-23 23:28:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 2be1682e4cc61635b8764d0db8ff40fe SHA-1: 42eba7e0e7432bbc458cf455a3d6a0672305a52e SHA-256: d917a96f8e960fd9c49b8f680060a7d232e2e241d07e909fb41025858311a147
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document contains a link farm pointing to compromised WordPress uploads and disposable hosting, suggesting it's designed to redirect users to malicious content or downloads. The presence of a 'download button' lure further supports a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://philabc.ru/uplcv?utm_term=block+spam+phone+calls+android PDF link annotation
    • https://sonntag-immobilien.lu/userfiles/files/nomikotevitabunupol.pdfIn PDF document text
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/1614c3a1ab458d---dotuki.pdfIn PDF document text
    • http://cuacuongiare.vn/upload/files/besapaselalorifetofe.pdfIn PDF document text
    • https://himalayanwanderer.com/himalayan/userfiles/files/23904742183.pdfIn PDF document text
    • https://fasleh.net/Files/files/63926808614.pdfIn PDF document text
    • http://vagtteam.com/userfiles/Files/16381103195.pdfIn PDF document text
    • http://mnogonomerov.ru/uploads/file/4887040582.pdfIn PDF document text
    • http://izeninfo.net/admin/upload/files/doxakitiletejof.pdfIn PDF document text
    • https://hebatkeren88.com/contents/files/pekesupirujowema.pdfIn PDF document text
    • https://cambodiadriverservice.com/userfiles/file/27943655298.pdfIn PDF document text
    • https://shen-su.eu/gfx/userfiles/files/67738539969.pdfIn PDF document text
    • http://hakanhurdacilik.com/userfiles/file/kitawora.pdfIn PDF document text
    • http://newcityhk.com/userfiles/nalufi.pdfIn PDF document text
    • https://senesi-sklad.cz/userfiles/file/nogedamiza.pdfIn PDF document text
    • https://thegmsbihta.in/userfiles/file/nasobojijodejepigugile.pdfIn PDF document text
    • https://sdhouse.info/ckfinder/userfiles/files/26024983565.pdfIn PDF document text
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144f29021aef---tetewilexoviz.pdfIn PDF document text
    • http://shopcloud.cloud/ckfinder/userfiles/files/73859626342.pdfIn PDF document text
    • http://daimarconstrucciones.com/images/admin/file/28822280515.pdfIn PDF document text
    • https://viceda.com/userfiles/file/99796168000.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/161375b0b68710---duvoranosesilufadit.pdfIn PDF document text
    • http://electrogalicia.com/electrogalicia/recursos/archivos/ralokorenevaweb.pdfIn PDF document text
    • https://electroagro.es/pub/files/vedoxew.pdfIn PDF document text
    • http://suranareecommand.net/UserFiles/File/62058435025.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_off0000d309.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD309 17532 bytes
SHA-256: 605cf3c025e33d5aab811f7e5d96df7a99e3bbcc696cfbacf66b9c9d88b0bcf8
font_01_sfnt_off00010013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10013 10824 bytes
SHA-256: b97a7e95a989260119c7a756a86b2442b44ba25b31fbad7be227d1b74196e4c0
font_02_sfnt_off000118d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118D3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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