Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e45640e0aebea50…

MALICIOUS

PDF

81.9 KB Created: 2021-09-07 15:44:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 140033f3de53d83ab0e93c536ef1ae9d SHA-1: b427a68f31dbb9e7503122c00791d02cbe8a634c SHA-256: 6e45640e0aebea50c08bb5a590f6d743271e6ee25d6fbd9a3f47e10c18fc5e55
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and a high ML score. It contains numerous embedded URLs that point to compromised WordPress sites and other disposable hosting, suggesting it functions as a link farm to distribute malicious content or conduct phishing. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics indicates a deliberate effort to obscure the true malicious destination through a network of seemingly unrelated domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/982d3bac1a290481d0ac4ed877cf6d28/bitagakerorogone.pdf In PDF document text
    • https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/eb6a6b9835b4ec43970bbea9efedd0c5/61590322318.pdfIn PDF document text
    • http://childhood-matters.com/clients/49507/File/zoritikidoxevilemawunan.pdfIn PDF document text
    • https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/g4rtlsuf0icm0cvj7bc1evlbhr/83058495655.pdfIn PDF document text
    • http://suitianhose.com//uploadfile/files/60177214217.pdfIn PDF document text
    • http://anshan56.cn/userfiles/file/16297679871292942265.pdfIn PDF document text
    • https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/78r2051k6kbujqo55kesh3s6t8/18433760984.pdfIn PDF document text
    • http://coss-wynn-reunion.com/clients/d/db/dbe3622004495b304d8703879a486b7d/File/50442007543.pdfIn PDF document text
    • https://grand-forge.ru/wp-content/plugins/super-forms/uploads/php/files/283205091a1bc2e5a5affadf6dbf6652/satekisedetes.pdfIn PDF document text
    • https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/a7c5bec974c62ee8dd559b33d6944710/majamenuximuvepuwilisa.pdfIn PDF document text
    • http://isystemlab.com/admin/ckfinder/userfiles/files/79739967267.pdfIn PDF document text
    • http://tks-forever.com/upload/2021/07/07/file/61736631164.pdfIn PDF document text
    • https://e-uchebnici.com/img/file/81353851421.pdfIn PDF document text
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/anmfuggakmmledrl3pbmqo8dr5/9318444355.pdfIn PDF document text
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/9219599ab5c4a39ff0e7a8fc2dbd338e/xufuvuwogap.pdfIn PDF document text
    • http://camelliafb.com/uploads/files/202108190054166094.pdfIn PDF document text
    • https://doxity.ro/ckfinder/userfiles/files/jisekoxanolumuril.pdfIn PDF document text
    • https://soechi.id/userfiles/file/paguviv.pdfIn PDF document text
    • https://0a3exp.com/upfiles/editor/files/12212702731.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b05e9a46057---rokezapunudapesedidem.pdfIn PDF document text
    • https://ytdrive.com/CKEdit/upload/files/53988674852.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1b3916b665---98362970675.pdfIn PDF document text
    • https://mannerfeltdesignteam.se/ckfinder/userfiles/files/wiwunoli.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=profit+and+loss+problems+tricks+pdfPDF link annotation
    • https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/da43c882ef3684a26e08b403830f5c1d/56009638134.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_off0000d8bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8BC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f0ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0CE 18536 bytes
SHA-256: bcb3bea41c139263f723e5792e6e6c22f5cdbc6359b20a8351e500455fab921a
font_02_sfnt_off000120e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120E1 11012 bytes
SHA-256: 201ccc63b8b11529bea9c5b8f68ef0cef378e6174dc3fffaff084ee9ae4e853b

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