Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b56248c032e232…

MALICIOUS

PDF

72.7 KB Created: 2022-04-22 12:21:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: eaba8ad318d6616b40d7017d18b98f29 SHA-1: ca8f6c85102742c3101f717004f78f0de236e901 SHA-256: 88b56248c032e232474d8638b3d137d5976191ee019a0a98fe6fdc32d208f550
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 http://studiospazioambiente.it/userfiles/files/94292887570.pdf In PDF document text
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/162597ad7bdfe4---bojixugirowuvodosijoge.pdfIn PDF document text
    • https://jasmijnbloemengroen.nl/userfiles/file/wutivolato.pdfIn PDF document text
    • http://toonesk.com/upload/13119124657.pdfIn PDF document text
    • https://greenlakepaint.com/ckfinder/userfiles/files/60907962235.pdfIn PDF document text
    • http://police8coop.com/UserFiles/file/42727079290.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/162474b6ccbe59---mutodixa.pdfIn PDF document text
    • http://yepuco.com/uploads/files/fedusizo.pdfIn PDF document text
    • http://hotelbellevuepalermo.com/userfiles/files/mazenipogurixifaneto.pdfIn PDF document text
    • http://www.barrettmotors.com.au/templates/admin/js/kcfinder/upload/files/gepazasej.pdfIn PDF document text
    • https://www.au-holding.ru/kcfinder/upload/files/sijeto.pdfIn PDF document text
    • https://nonuvibunufiki.weebly.com/uploads/1/4/1/3/141349886/4314871.pdfIn PDF document text
    • http://maybaobibaolong.com/hinhanh_fckeditor/file/rifereb.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/f556f052514d6e099932620dec10321e/zizutabovuwojo.pdfIn PDF document text
    • http://archissimo.eu/userfiles/files/48371372940.pdfIn PDF document text
    • https://farnost.nivnice.cz/files/file/dabatizewugiko.pdfIn PDF document text
    • http://ekvatorbl.com/userfiles/file/57741932349.pdfIn PDF document text
    • http://pastoret.it/userfiles/files/velodukimizufutul.pdfIn PDF document text
    • https://fisusaweku.weebly.com/uploads/1/3/1/8/131857315/ea1a925e853036.pdfIn PDF document text
    • https://pofubelepegeva.weebly.com/uploads/1/3/0/7/130776421/3376575.pdfIn PDF document text
    • https://smartelite.org/uploadimages/files/74860941947.pdfIn PDF document text
    • https://tevav.co.za/YmrXLWy8?keyword=ne%20me%20quitte%20pas%20lyrics%20regina%20spektorPDF 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 extracted file (font_00_sfnt_off0000b82a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b82a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b82a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB82A 11148 bytes
SHA-256: 32e16c9e8d39eecfcde13470843cb932104089ae984534c345d34b926696dcfe
font_01_sfnt_off0000d1f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1F3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ea05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA05 16400 bytes
SHA-256: 49c9b5e3f3422275940918dc2794513ff03e47ce586f72d017acbfb98b0b30d7