Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6993d6f190b33ae…

MALICIOUS

PDF

85.8 KB Created: 2021-07-03 08:47:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 2c02232e9ac2848343dc6de38bff1cce SHA-1: 86e229dbef0af29d12017270839de550eb31635b SHA-256: e6993d6f190b33ae0772b3c9dcdeaf6aca4fbac12cfd7b8d666801b46240fa30
164 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links to compromised websites and a deceptive download button, suggesting a phishing or malware distribution scheme. No scripts were extracted, but the overall structure and URL findings point to a lure for downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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 http://bensonhigh67.com/clients/55910/File/pizanubejafub.pdf In PDF document text
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093f54769a03---1089129551.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609c51b214f23---buvunoxagosawidenit.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/rt34o0hm18cffhrnlalvmeu9jg/85721779491.pdfIn PDF document text
    • https://aimhc.com/userfiles/file/korefixobofakebo.pdfIn PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/1607dc4aa5e925---fadulogivorasavixokezojim.pdfIn PDF document text
    • https://www.pennlighting.com/wp-content/plugins/super-forms/uploads/php/files/783c9598a88aba4cbeac31c9b851e8f2/pudegijetudozepexobunot.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078ac133a3c2---81075875913.pdfIn PDF document text
    • http://adveotec.com/img/file/25886994740.pdfIn PDF document text
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/5614b00c3991d04cb4b240ff5585a99f/fabanewopuvugipirogo.pdfIn PDF document text
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/avpba52haf6c7t7jbspm6vs962/jexaboxusojevovon.pdfIn PDF document text
    • https://vntdc.com/upload/fck/file/gudirewo.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072f3ab3b9be---wuwimiruguduni.pdfIn PDF document text
    • http://daiichitravel.com/uploads/news_file/nijojenux.pdfIn PDF document text
    • http://sghscsjamarai.org/guruhargobind/userfiles/file/68974533488.pdfIn PDF document text
    • http://tks-forever.com/upload/2021/06/16/file/mizofivawugipeparuturam.pdfIn PDF document text
    • http://monkey-do.net/userfiles/file/nokazefugoba.pdfIn PDF document text
    • https://mayurherbal.com/userfiles/file/xuwaradesudez.pdfIn PDF document text
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bfd62817275---babidutovilajojuwejawige.pdfIn PDF document text
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/80757061725.pdfIn PDF document text
    • http://dgjinhak.kr/DATA/upload/files/202105300745544362.pdfIn PDF document text
    • http://maxtarget.by/ckfinder/userfiles/files/43339241264.pdfIn PDF document text
    • https://audreyheselmans.com/_files/file/folugipevas.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=introductory+econometrics+solution+manualPDF 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_off0000e97f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE97F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10191 18096 bytes
SHA-256: 4300cb30c7050e1f2323033e42b54641040e02421fbc2c0104d8694ce64fc55b
font_02_sfnt_off0001310e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1310E 10696 bytes
SHA-256: 0bf5d7bcd1adbe3c7c0dc3c7d7a85e1d0731c0de2781eaf35760461e8c1df39b

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