Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0e7ecd432f0d11e…

MALICIOUS

PDF

72.0 KB Created: 2021-09-25 10:31:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 951dcdb045bb1ff10c3630df666a77bb SHA-1: e53104ed2bca3d0a236ade690d7308480a81a3d6 SHA-256: d0e7ecd432f0d11ed009d862fac874bbd9ba0d2a4d74b3a9d200c163dfa886a4
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document exhibits characteristics of a link farm, embedding a large number of external URIs, with a high ML classifier score indicating malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious websites, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9894

Heuristics 4

  • 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://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/e05d26ad64b28475cab6a513568bc5f7/12221229699.pdf In PDF document text
    • http://rosesrealtyhomes.com/userfiles/files/39101643269.pdfIn PDF document text
    • http://www.anieliasfx.com/uploads/textareas/file/waparu.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614c4dd057fee---34644145766.pdfIn PDF document text
    • http://maraulsan.com/ckfinder/userfiles/files/mamavaxajozof.pdfIn PDF document text
    • http://probeg2000.ru/files/userfiles/files/silerejukobigofemitutiso.pdfIn PDF document text
    • http://baltyk.recykling-rejs.pl/imgturysta/files/sigaxupol.pdfIn PDF document text
    • http://fedime.org/imagenes/zemodatodokaj.pdfIn PDF document text
    • http://hotelamadeustorino.com/userfiles/files/galupizolobivevaje.pdfIn PDF document text
    • http://stisk.com/file/42841369881.pdfIn PDF document text
    • https://ww150003.linebot.net/upfile/files/20210925085841.pdfIn PDF document text
    • http://honeystraw.com/uploadfiles/file/wozesaxowanitanudez.pdfIn PDF document text
    • https://ayurmitra.com/files/file/22296842103.pdfIn PDF document text
    • http://nerezove-kuchyne.cz/UserFiles/File/vuviv.pdfIn PDF document text
    • http://ardeche.proximeo.com/ckfinder/userfiles/files/xepisimevotikilozewogopu.pdfIn PDF document text
    • http://rocincorporated.com/domain.com/images/dynamic_pages/file/93284831781.pdfIn PDF document text
    • http://patrickstaxi.fr/userfiles/file/ziwaxelozojanonag.pdfIn PDF document text
    • http://dribblebar.pl/userfiles/file/sesefejafujevi.pdfIn PDF document text
    • http://criollo-cocoa.com/userfiles/file/vuxuzetalokogozikasumid.pdfIn PDF document text
    • https://doan295doson.vn/namthuan/images/news/files/lekoviwokigazusuw.pdfIn PDF document text
    • https://weborder.cloud/userfiles/file///30198215543.pdfIn PDF document text
    • https://mrpressconsulting.com/UserFiles/file/fovis.pdfIn PDF document text
    • https://mumegram.com/userfiles/file/gijepodekib.pdfIn PDF document text
    • https://studybrilliant.online/app/webroot/img/userfiles/file/gozunogasininexi.pdfIn PDF document text
    • http://villacappuccina.com/userfiles/files/rimufu.pdfIn PDF document text
    • http://wccflooring.com/userfiles/files/72667048474.pdfIn PDF document text
    • https://houstoncoinshow.org/FCKeditor/file/53770283737.pdfIn PDF document text
    • https://hasekei.jp/userfiles/file/xelesabavidopukaxes.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=top+10+survival+games+for+androidPDF 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_off0000b6fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6FE 11048 bytes
SHA-256: 13ec6d2fda71a73dbbf624c503e1490c47644473904cac0e84068b54ba6f0503
font_01_sfnt_off0000d080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD080 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e892.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE892 16308 bytes
SHA-256: ef885504a7bfbc83dc02aee6d8b868477609c9e77748db020fa90c7b573527f7