Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87da2d4dfd15ab9…

MALICIOUS

PDF

317.8 KB Created: 2021-12-30 23:01:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: 62f6231c9e553159e7f7eb6b0d38c317 SHA-1: 2dc0017913f7782221de88eda6ef0abe6d8adfdd SHA-256: f87da2d4dfd15ab936bb01783678a8c85324c3f34e8b10073dc76ea81ab04571
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9570

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 http://lemma-studio.pl/userfiles/file/85698116053.pdf In PDF document text
    • http://xn--80aafbkbafwdti1ahihccrg.xn--p1ai/pict/file/69423016639.pdfIn PDF document text
    • https://nullemont.fr/nullemont/ckfinder/userfiles/files/46935122894.pdfIn PDF document text
    • http://lorofilmes.com/Uploads/ckfinder/userfiles/files/raputaperofafigi.pdfIn PDF document text
    • http://xn--3bsx3iw22bmot.com/filespath/files/20211031161209.pdfIn PDF document text
    • http://dighakanchaninternational.com/FCKeditor/file/gonubolifaxejefuzadaro.pdfIn PDF document text
    • https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/b41hndbgouvf7gjrteptegdsh5/rubugab.pdfIn PDF document text
    • https://nepaltrekkinginhimalaya.com/assets/userfiles/files/luluremap.pdfIn PDF document text
    • http://attilacenter.org/userfiles/file/11816660689.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/161889b391036c---loduj.pdfIn PDF document text
    • http://montaze.org/democms/userfiles/file/gexibidinamawolopetoz.pdfIn PDF document text
    • https://nezrenpin.com/calisma2/files/uploads/xapomedot.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/161a42608e04ca---lajodetivonowejarubesajot.pdfIn PDF document text
    • http://tycoonmedical.com/userfiles/file/93649933079.pdfIn PDF document text
    • http://millionsdiscount.com/mo_images/files/85894339892.pdfIn PDF document text
    • http://www.radanhorse.com/resource/files/goxanagilawasibixo.pdfIn PDF document text
    • https://agencement-menuiserie-var.fr/stockages/files/34572318212.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/4dZi1sgP-vI/uplcv?utm_term=answering+service+careersPDF 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_off00048eb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48EB2 10272 bytes
SHA-256: 727defcac9b733dc62d58babfeef399275d2c8efd02888b2cb2995703f353818
font_01_sfnt_off0004a608.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A608 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0004bca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BCA7 17120 bytes
SHA-256: 21b5ee8fd75adba5590ba7739df1955e1527b4c2c71d3bf6aa146260982a59fe

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