Malicious PDF — malware analysis report

Static analysis result for SHA-256 01ae53dfeed19298…

MALICIOUS

PDF

89.8 KB Created: 2021-07-17 04:13:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: fdc097fb8b72e20de33d9eaa183ad651 SHA-1: 01de14bb075ad6ebc869df156a07afe2045bc771 SHA-256: 01ae53dfeed19298c35eaf66db5d641cde49812d8af2ea319e57a70e2155bdbf
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent. The file's structure suggests it's designed to lure users into clicking links that lead to further malicious content or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3d06fab660---60425394515.pdf In PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d38c0be7aa8---85577060608.pdfIn PDF document text
    • https://bulendengin.com/upload/ckfinder/files/fijuvenepamuze.pdfIn PDF document text
    • http://fanta-life.com/userfiles/file/pikaworajo.pdfIn PDF document text
    • http://geraldkleinlaw.com/ckfinder/userfiles/files/mobavolukirimiporis.pdfIn PDF document text
    • http://loveperfectionschool.com/upload/file/47025846917.pdfIn PDF document text
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/117e130284adece56417ea6127b41573/mabonerebu.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093139d7bd11---29484170105.pdfIn PDF document text
    • http://cukierniabrzezinski.pl/www/artizam/fck/file/gazisudumimusa.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/053282570a7d4f9dadd45fe862eafafa/zujirupiban.pdfIn PDF document text
    • http://aodaiminhhanh.com/app/webroot/uploads/files/zovamojuvaruxojozilezi.pdfIn PDF document text
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/7836f926121e412045a64a0c7a2b0e1b/tesuvovisi.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/pepomemujinakiboxubu.pdfIn PDF document text
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/u0m4e94n15skm7djokt7nb2r9t/56701073896.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/16077cd330b2dc---23465220899.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c3939373456---xigonevapolubador.pdfIn PDF document text
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/883c9d8f7683f27169dcd77eaa9e3859/86129751712.pdfIn PDF document text
    • http://forter.vn/hinhanh/file/13029446030.pdfIn PDF document text
    • https://aimtronu.org/userfiles/file/mobiwibakus.pdfIn PDF document text
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16072cc327edec---gilodipuzewa.pdfIn PDF document text
    • http://cy2hand.com/userfiles/dimalotopamusekikaga.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160dce1358efac---7581694800.pdfIn PDF document text
    • http://maynenkhiinverter.com/media/ftp/file/88117835545.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=subway+surfers+game+free+download+for+pc+windows+8PDF 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_off0000f806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF806 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001101d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1101D 11588 bytes
SHA-256: 88f55d23459ab3259250e75f6bbb567e5b0c0edd2dac9b47575b31d423acf8fc
font_02_sfnt_off00012b37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B37 17712 bytes
SHA-256: d608e1d430e781b4c242dd6a50961734884cb9c488fc92b53c2c8d59c6c6e93f

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