Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5264fda822c312c…

MALICIOUS

PDF

87.5 KB Created: 2021-09-03 20:13:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 32dbec4b1e515f3ea6335748b64a71d5 SHA-1: a057c7b2a1cd52f10d914ba582242932abbe5952 SHA-256: d5264fda822c312cec1864965458c8bee9ce08de2b4fc738afcc476f1400f9e5
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to multiple compromised WordPress sites and disposable hosting, suggesting an attempt to distribute malicious content or phish users. The document body is heavily obfuscated and unreadable, providing no direct clues about its specific purpose beyond the presence of these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://needlugs.com/userfiles/files/fedomukavowipojelugowafek.pdf In PDF document text
    • https://bloomland.com/sites/bloomland.com/files/81976977314.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a735397cdce---monurejeji.pdfIn PDF document text
    • http://lapempi.nl/ckfinder/userfiles/files/89174401985.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607ca2c314629---47626833333.pdfIn PDF document text
    • http://stihoplet.by/upload/editor/files/27338959624.pdfIn PDF document text
    • http://alnadaoil.com/userfiles/file/20002528089.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0a463e75bf---janobagem.pdfIn PDF document text
    • http://colafranceschi.it/userfiles/files/mebolozolol.pdfIn PDF document text
    • http://sro52.ru/uploads/files/tuzusafivovarafivug.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4dcfaec392---51113967575.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607966a31e663---vofosebafukokesitino.pdfIn PDF document text
    • https://laurallo.com/ckfinder/userfiles/files/gevopamu.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f05a2290ef---zefonizobixovus.pdfIn PDF document text
    • http://anatolianlgs.com/userfiles/file/29239933390.pdfIn PDF document text
    • http://alexforstarlight.com/clients/4/41/4125d763bdae894b2c088b8c4c0f4705/File/14977704216.pdfIn PDF document text
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607765ee22422---repenogomazorokupuso.pdfIn PDF document text
    • https://www.la-melodie-des-saveurs.fr/ckfinder/userfiles/files/38159934920.pdfIn PDF document text
    • http://portaldo.eu/contenuti/upload/file/fitidosoxejakugororisu.pdfIn PDF document text
    • http://cutencuddlybreedables.com/_images/file/97288237686.pdfIn PDF document text
    • http://tantusmarina.com/UserFiles/file/8204294483.pdfIn PDF document text
    • http://studiotecnicoprato.eu/userfiles/files/23308725527.pdfIn PDF document text
    • https://efficimm.fr/userfiles/files/1938260946.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=absolutism+in+europe+pdfPDF 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_off0000f27b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF27B 17508 bytes
SHA-256: bf14a6c040f395a65a0cea92985932d97ea48c0cd2cc3e390bbf39e74df9ca8d
font_01_sfnt_off0001202d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1202D 10716 bytes
SHA-256: f0fe48633c6add20e97ba736fb067798578c06a4b2c459193bb8e8c8fe2376b3
font_02_sfnt_off0001388b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1388B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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