Malicious PDF — malware analysis report

Static analysis result for SHA-256 d096f81dace39514…

MALICIOUS

PDF

102.1 KB Created: 2021-07-27 00:42:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 8f5b7c73aa9c8403ed1b34bf777aad65 SHA-1: c2c70606782f26005adc567d10004a486eb7f506 SHA-256: d096f81dace395143513ce512e09df725f2ddb85b8ee1beee1c0504a61341765
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to compromised or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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
  • 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://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/a9u0rpgb3vhqu03n105bano7bs/4896868564.pdf In PDF document text
    • https://minipowerpack.net/upload/files/68130279654.pdfIn PDF document text
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160967b476141c---webezivezafiponowojamuxo.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/4116850094.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/160858a0e9d760---47513122939.pdfIn PDF document text
    • http://pomocnaukowa.net/Upload/file/koxisofokunavovabin.pdfIn PDF document text
    • https://uzmanwebci.com/calisma2/files/uploads/61698108408.pdfIn PDF document text
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ee0e8a6366---pixiwatuwep.pdfIn PDF document text
    • https://a2designbg.com/userfiles/file/zitorebevofixozosiw.pdfIn PDF document text
    • https://photojet.net/userfiles/file/gokajasibojuvegupavija.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160d01e7908d1a---vodigegepopevekos.pdfIn PDF document text
    • https://parklanehotel.asia/userfiles/file/36031051380.pdfIn PDF document text
    • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c6dd422f92a---dubesufilagulanixawalib.pdfIn PDF document text
    • http://aydinservis.com/ckfinder/userfiles/files/jugifazexuwuzas.pdfIn PDF document text
    • http://envisystem.com/upload/userfile/files/zikiwefilikovevisi.pdfIn PDF document text
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/b8f06ad77cc1f09c1fc4a3d0644f38bb/vajebajetesatoziwekeju.pdfIn PDF document text
    • https://lee-trading.tw/archive/upload/files/30492772158.pdfIn PDF document text
    • https://marbellamohali.com/wp-content/plugins/super-forms/uploads/php/files/b59f5d8d626655b5579473794df59943/41278604417.pdfIn PDF document text
    • http://kaitosushisb.com/uploads/files/wolasakimuwabonivuteka.pdfIn PDF document text
    • http://dbcasagayathottam.org/assets/uploads/cms_images/files/dejaremukiwajol.pdfIn PDF document text
    • http://hsiwww.com/image/files/20210623_020446.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=systeme+d+exploitation+exercices+corrig%C3%A9s+s+pdfPDF 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_off00012114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12114 11408 bytes
SHA-256: 3d6018f2287c1bb5fc2b80abe139af493949749cad8f5a7b74b459ec688f23d7
font_01_sfnt_off00013b79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B79 20176 bytes
SHA-256: a4f2b1fe2be86bccea8927725ae7a368fc76b8179d15d7cde6be0254fb0d193d
font_02_sfnt_off00016f42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16F42 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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