Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbd3175d15ab7a6f…

MALICIOUS

PDF

79.8 KB Created: 2021-09-10 12:14:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: d46f1b29cae5ec7f488a0e39f4b818ae SHA-1: 91eae50efedce3e28c5dee1b2dbc095f971ec3b5 SHA-256: bbd3175d15ab7a6f5688965030ed80940c7a378e0709bbc1bf748957aeaf93e8
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of `utm_term=download+dream+league+20` in one URL indicates a lure related to game downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://garglob.ru/uplcv?utm_term=download+dream+league+20 PDF link annotation
    • http://tentimesneedlehill.com/UPFILE/userfiles/files/31253128851.pdfIn PDF document text
    • http://hoanhaochemical.com/uploads/files/32266433385.pdfIn PDF document text
    • http://guanzhuli.com/userfiles/file/59052284023.pdfIn PDF document text
    • http://tsnpharma.com/upload/files/80717436180.pdfIn PDF document text
    • https://salwangurugram.com/files/5528891994.pdfIn PDF document text
    • http://355353.ru/userfiles/file/39185419024.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/tutawog.pdfIn PDF document text
    • http://postelezmasivu-brno.com/ckfinder/userfiles/files/81261752983.pdfIn PDF document text
    • http://talk200.com/admin/admin/uploadfiles/file/45567811290.pdfIn PDF document text
    • https://littleedupark.com/ckfinder/userfiles/files/mibevifabuvosofepuna.pdfIn PDF document text
    • https://wintechindia.in/ckfinder/userfiles/files/22085647435.pdfIn PDF document text
    • http://psychanalyste-gard.fr/ckfinder/userfiles/files/ziminuvitikalili.pdfIn PDF document text
    • https://foodexgida.com/uploads/files/rosazuzofu.pdfIn PDF document text
    • https://www.alugutader.fr/ckfinder/userfiles/files/54228511749.pdfIn PDF document text
    • https://sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613af8a833793---57896369903.pdfIn PDF document text
    • http://yuemeism.com/uploadfiles/files/70000691112.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/524c23a5a3e8cd5971bda6f82a1b417f/dagakidaluliduruvaxapo.pdfIn PDF document text
    • http://cocoon-source-harmonie.fr/public/file/66289691605.pdfIn PDF document text
    • https://jaurrieta.net/USERFILES_JAURRIETA/files/16880077842.pdfIn PDF document text
    • https://agrocare.ro/ckfinder/userfiles/files/sipozote.pdfIn PDF document text
    • https://tybistanbul.org/resimler/files/61686442423.pdfIn PDF document text
    • http://moscreen.in/cmsfiles/file/34315086238.pdfIn PDF document text
    • https://designclarf.it/file/lulajerugus.pdfIn PDF document text
    • http://cmorshomecareassociates.org/uploaded_files/userfiles/files/64836148876.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 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_off0000d57a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD57A 17104 bytes
SHA-256: 1ccf9dacb1175a711876effcc226cd109261d9f20fd17a453c6ec4995f419e37
font_01_sfnt_off0001016f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1016F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11986 10664 bytes
SHA-256: 5c7b32940cd389edf1a5619bca0967e2dc5aa8f489883acf82d7ea0e305c6e97

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