Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bc2202852b35aa0…

MALICIOUS

PDF

209.6 KB Created: 2021-12-30 14:19:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: b526f44e23d3338a8fe83e0e4f8919d1 SHA-1: 4784bd42250dbab656e0a07562112f3a913b604a SHA-256: 3bc2202852b35aa0284b84d7d4a509232b31aff80db113ba2f3993a888023bfb
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7784

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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://laborke.ru/uplcv?utm_term=bixby+voice+apk+xda PDF link annotation
    • http://nhasachnguyenvancu.com/Images_upload/files/lezevenirosasemafeve.pdfIn PDF document text
    • http://constantemails.com/userfiles/file/1638035037xotewol.pdfIn PDF document text
    • http://archissimo.eu/userfiles/files/54980602108.pdfIn PDF document text
    • http://skalamatbaa.com/userfiles/file/14300111610.pdfIn PDF document text
    • http://hacoauto.vn/upload/files/zuliw.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1616c8873b6097---27331895868.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/7a253a854c68cb52887637f41e50250d/14561414492.pdfIn PDF document text
    • http://taiwangallant.com/uploads/files/202109122256277732.pdfIn PDF document text
    • https://austarpharma.com/upload/files/51512700492.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161a8dd0f88fb5---giletiwuzejaxibegexofi.pdfIn PDF document text
    • https://toptenstudy.com/upload/files/BodyFile__61CB21446E6EB.pdfIn PDF document text
    • https://freshchannels.com/home/sites/freshchannels/public_html/ckfinder/userfiles/files/kubugemetiwa.pdfIn PDF document text
    • https://giolog.biz/images/bulk_images/files/watifo.pdfIn PDF document text
    • http://lnaixi.com/userfiles/file/20211116163832_1091185069.pdfIn PDF document text
    • http://atem.sciara.eu/public/upload/file/gofijubonabidumegudisorix.pdfIn PDF document text
    • https://cingenito.ca/upload/editor/file/57269415314.pdfIn PDF document text
    • https://ariconium.cz/webpagebuilder/ckfinder/userfiles/files/93982502852.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/b10d13730e0295ba7c313c92d1b716e5/kalapenumasirodubobeman.pdfIn PDF document text
    • http://hotstamping.pl/files/file/20976193402.pdfIn PDF document text
    • https://easy2ticket.com/upload/files/59848836814.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/1615939bfd2d8e---12366633465.pdfIn PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/21ff742e888e7936212e7b62554a852e/gusupepejodaxe.pdfIn PDF document text
    • https://pharmawell.eu/ckfinder/userfiles/files/jususesukabevapesuve.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 extracted file (font_00_sfnt_off0002daa7.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0002daa7.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002daa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DAA7 17848 bytes
SHA-256: 6ba126d5b89d7bcb006b6761d0f5a294e485bc207261e1948c4a908911cf25a1
font_01_sfnt_off000308f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x308F9 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00031f9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F9D 10556 bytes
SHA-256: 76d384075f8220dcb7639e9bac11604fd3d95c666574e4ac113619f03676ba57