Malicious PDF — malware analysis report

Static analysis result for SHA-256 32d54e48f46daa76…

MALICIOUS

PDF

73.3 KB Created: 2021-09-08 08:44:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 9bd178bba1d77095088cff0991be0c86 SHA-1: 3c42bdcf7ca89de6eff276b7dd219773d489a21e SHA-256: 32d54e48f46daa761772c293f67dbc1220d8953257afaf01af2dcde6c4168dc4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm hosted on multiple compromised websites, directing users to download further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of numerous links to potentially malicious PDFs suggests a downloader or phishing lure.

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://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/45c47c25a82b9625cc2ce3016295874b/44450958786.pdf In PDF document text
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083093f9f554---39370323527.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607033e13e5fb---kebemebisujexuzowezim.pdfIn PDF document text
    • https://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/53bef373df166f689aa62dcf0ba7504a/jajerepibuki.pdfIn PDF document text
    • https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/3f59bde00880061dbf9d1c0fcd78d8ec/56201852628.pdfIn PDF document text
    • http://www.logomarcanet.com/userfiles/file/1687532984.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c924c4939d8---vijopomereren.pdfIn PDF document text
    • https://maturana.cl/upload/file/60397873775.pdfIn PDF document text
    • https://festival-bg.com/media/ckuploads/files/mudukunemebux.pdfIn PDF document text
    • http://ruresept.ru/files/file/45026421518.pdfIn PDF document text
    • https://gruppopolidori.com/upload/image/file/24523085883.pdfIn PDF document text
    • https://lescourailleurs.com/upload/editor/file/vebuk.pdfIn PDF document text
    • http://nhatminhtrading.vn/app/webroot/uploads/files/46049902957.pdfIn PDF document text
    • http://urjabatteries.in/userfiles/file/lenugifuditakejovasifov.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/3b8f237e9518099b7872baa5c20d85ed/28311845825.pdfIn PDF document text
    • http://nutronicltd.com/userfiles/file/nebuvusalu.pdfIn PDF document text
    • http://heaig.org/editor/ckfinder/userfiles/files/nelutikatunotino.pdfIn PDF document text
    • https://shipnhanh247.vn/asset/files/4108384341.pdfIn PDF document text
    • https://sthouseluxury.com/upload/files/kowuriviriloputiwoxar.pdfIn PDF document text
    • http://manilag.com/FileData/ckfinder/files/20210712_8CB3CA52FD981997.pdfIn PDF document text
    • https://movimientofamiliadejesus.com/images/uploaded/file/98024149341.pdfIn PDF document text
    • https://www.varishastalari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c227e2d2b8---56193670957.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/37048ef203af67d784a37557cacde43e/butizomamuvowumeno.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=alesis+q49+manual+downloadPDF 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_off0000ba7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA7D 17328 bytes
SHA-256: 92d987c49291f90965a3b3c25a026b2fc116b93aa932317309e108be8b8c2b5b
font_01_sfnt_off0000e6fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6FA 10768 bytes
SHA-256: 49e008101d2d65191b2779dbcbe5724e7238e8329dcc20502c02214217a601a5
font_02_sfnt_off0000ffa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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