Malicious PDF — malware analysis report

Static analysis result for SHA-256 fee4069a29dd6222…

MALICIOUS

PDF

87.8 KB Created: 2021-09-02 00:47:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: c7a4a5c0764cd484c35282f6ef693d58 SHA-1: 16cb9fb1e662daad20c17d782fd6a0b5bbf851ae SHA-256: fee4069a29dd62220f9f08f8237b43d36167bc0d8722f699a03a6c57eb2a164e
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code. It also features a link farm pointing to compromised WordPress upload storage, suggesting an attempt to redirect users to malicious content. ClamAV detection and ML classification further support its malicious nature, likely as a phishing or malware delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/160738ffe4dc40---bububeduzekezusir.pdf In PDF document text
    • http://akinmedical.com/uploads/file/55503462659.pdfIn PDF document text
    • https://lexconsulting.ro/webroot/files/media/30124658711.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/tllgdq0g34n0ie7to1pop16jt3/21913020362.pdfIn PDF document text
    • http://web68s.com/upload/files/76747022977.pdfIn PDF document text
    • https://dlt-nkp.com/fileupload/file/buvugesusunoz.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/8398666b52c25a777cfc630f7fc9657c/90858714468.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c136a70d7a5---90309364339.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb941df1cbb---53868638579.pdfIn PDF document text
    • http://kk-gorenjska.si/uporabnik/file/vuxadilaxamajiwa.pdfIn PDF document text
    • http://cukiernia.eu/upload/files/68029373355.pdfIn PDF document text
    • http://swiss-ex.com/images/blog/file/malarapifuzivipoduxato.pdfIn PDF document text
    • https://imad0c0.com/js/ckfinder/userfiles/files/pologomozuforomabe.pdfIn PDF document text
    • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/0618e211cfed37ee30d7942f1d6e5530/kitenosedotezubamexata.pdfIn PDF document text
    • https://uangraja.com/contents/files/24595917961.pdfIn PDF document text
    • http://bluedevils59.com/clients/862365/File/97928436245.pdfIn PDF document text
    • http://christ-china.com/filespath/files/20210828110424.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/ejqnsd4ed343go7vhmtr2nft95/fibitigutufegedu.pdfIn PDF document text
    • https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/e4dd8f6ff1579c9ee113b7228358dee8/80763669656.pdfIn PDF document text
    • https://isleo.com/i_photos/file/wepowiwegime.pdfIn PDF document text
    • http://teamwork-poetschke.com/ckfinder/userfiles/files/wemovelunezisixozekat.pdfIn PDF document text
    • http://bogelaipigeon.com/upload/file/sorutegusiparapagibewipun.pdfIn PDF document text
    • http://gapoom.com/upload/fckeditor/file/detofenojet.pdfIn PDF document text
    • https://ever-progress.dacola.com/upload/files/ludefidaginisediko.pdfIn PDF document text
    • http://xn--54-dlcdkamdj4btild5b.xn--p1ai/ckfinder/userfiles/files/81962519476.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=jee+mains+pyq+chapterwisePDF 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_off0000e7cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7CC 20952 bytes
SHA-256: dfc073b3970d329986b3e618f607303257c42b90f7e3298700db43dc41b1d422
font_01_sfnt_off00011faf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FAF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000137c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137C6 10808 bytes
SHA-256: 715dc43d2143e32e1dbccf3906852108b13d42d8b38a405128b0d9e19043aa39