Malicious PDF — malware analysis report

Static analysis result for SHA-256 df2522e9b8f44316…

MALICIOUS

PDF

91.1 KB Created: 2021-07-02 11:01:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 41d0882f3f0b742ed07c00cd95526546 SHA-1: eeeb1205560f0ac6e5f768e67aaebe21b8e751e8 SHA-256: df2522e9b8f44316427c0f9df5e7a136a732131151f432845db1bd927ca9c34a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links pointing to compromised WordPress sites, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were extracted, the structure and URL patterns are consistent with a malicious PDF designed to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9932

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://archism.ru/uplcv?utm_term=vidmate+2017+apk+download+for+android
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/9mdib24jeh7ijacjsqgn37jfv4/80036390243.pdf
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608075324c5d5---96117786800.pdf
    • http://a-daily.jp/app/webroot/contents_img/files/93530120569.pdf
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079ade777850---47641927096.pdf
    • https://kamarkosong.com/contents//files/14932546280.pdf
    • https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/pubekc61ji3k3g7uva8lmvfbt3/mafiviwujowa.pdf
    • https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/126a6aedcfeea8a0c0dd221c974aba7d/vupaduvunolujamopuxu.pdf
    • https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/16085e8b265987---verizem.pdf
    • https://emprenderem.cl/files/64770415774.pdf
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607a353ee50a5---noxedufixikajosi.pdf
    • http://raiders71.com/clients/4/41/4134020f2f298c111575624a380fabfc/File/zaretavovepanu.pdf
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1607e6a9e80d0d---falukeselakikewav.pdf
    • http://arabic.cz/ckfinder/userfiles/files/25201776727.pdf
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/b07079306f9d40bd6aae10ac03caa6d8/pidototonugo.pdf
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160954dd9d13c5---gifimaxumasujomosamuj.pdf
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1607df577e46f5---fidesasimapabapapalaxi.pdf
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160708f47e13e5---farogosulonemetug.pdf
    • https://pristineleather.com/userfiles/file/99195562315.pdf
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/b88c27ec226b95534f12ea33f4b26a48/xegivigomekupevazopida.pdf
    • https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/10096766dff552ab8d42c47922ffb85d/32301642998.pdf
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/721baf88fa6189f312a87e32b1d50c68/31100981044.pdf
    • http://acupunctuuryao.nl/ckfinder/userfiles/files/47921750891.pdf
    • http://coreaad.com/DreamDataUpload/file/xazewefusejilotutij.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e962.bin
20111ce8f623ce730cceff6dcc479e2985ba591d974e4bd79237587b73e04786		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE962 16972 bytes
font_01_sfnt_off000115cc.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115CC 16792 bytes
font_02_sfnt_off00012de3.bin
525b39a12ef244f497db19f753dbf8ddd67a73bedfcf67c928805699bed25382		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12DE3 10980 bytes
font_03_sfnt_off0001477a.bin
fd494554c7a7a2c4488382a78096c535ff133766c7221992be4f6a58596b2467		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1477A 16164 bytes

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