Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e48f2d6f0337b3a…

MALICIOUS

PDF

86.5 KB Created: 2021-07-08 01:53:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: a683aa12f175f71dce277379a7a8a8f1 SHA-1: 0d84d951858dec8e430482f961456fd41382ca19 SHA-256: 2e48f2d6f0337b3a70051bd79781d63356221863e8948d67d71783e5c4717c2f
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or malware distribution attempt. It contains numerous embedded URLs that point to compromised websites and disposable hosting, suggesting it functions as a link farm to lure users to malicious content. The presence of a download button heuristic further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://oniceh.ru/uplcv?utm_term=pitbull+breeders+in+maryland PDF link annotation
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/9b13db87299ec1ce727f31920d75cacc/27629669394.pdfIn PDF document text
    • http://www.la-rocca.pl/app/webroot/files/files/31906981755.pdfIn PDF document text
    • http://ags-sib.ru/ckfinder/userfiles/files/85994247428.pdfIn PDF document text
    • http://aep-tc.com/cache/fck_files/file/84770232779.pdfIn PDF document text
    • http://sakuragiramenandsushi.com/uploads/files/zulufixi.pdfIn PDF document text
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b8b98971bf1---peperenapapaxixuteraf.pdfIn PDF document text
    • https://bettyloupaints.com/userfiles/files/67265712953.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082ebb2036da---bigawawufireraxobebuza.pdfIn PDF document text
    • https://kurishupally.org/userfiles/file/54801846934.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d2e34d66b5a---15089337056.pdfIn PDF document text
    • http://fsoa.cn/userfiles/file/71730911291.pdfIn PDF document text
    • https://holyfamilyhospitals.com/ckfinder/userfiles/files/lepawadekajewotule.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090300b90487---foziwuditakupesawovu.pdfIn PDF document text
    • https://nolimitscenter.be/peausitive/images/FCKeditor/file/14705825342.pdfIn PDF document text
    • http://ehs1958.org/clients/73155/File/xozofew.pdfIn PDF document text
    • https://tavio.ru/files/file/4348594905.pdfIn PDF document text
    • http://fullx.net/files/nujetemoz.pdfIn PDF document text
    • https://uleiuri.ro/userfiles/file/68236300524.pdfIn PDF document text
    • http://maslatalaia.com/userfiles/file/desagijinabokudozatasite.pdfIn PDF document text
    • http://dmscsmartlifeblog.com/userfiles/files/78319116405.pdfIn PDF document text
    • http://udmvdpo.ru/images/files/piwapedenosexusarizejaw.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160ba8cbbcaef6---rizolugu.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC77 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10489 17856 bytes
SHA-256: 1f908d9507788895b745940937ecf63dbc9aab274bc9a8b4a92c53cc4c55aa84
font_02_sfnt_off0001332c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1332C 10644 bytes
SHA-256: e1453d96dbdfc92c1309485c50578f9ff47ac2ffdc5de5e4362f6016643ad00d

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