Malicious PDF — malware analysis report

Static analysis result for SHA-256 fee149903c669986…

MALICIOUS

PDF

81.9 KB Created: 2021-09-20 05:48:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-07
MD5: c9de4d345b0ca26e477295370e72617a SHA-1: 399dda38a49971ac2492d591931108ba0b49fd2f SHA-256: fee149903c66998611845e893a2a8b18bbe4b9b963d5298b13d795138d648e22
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which are hosted on compromised or disposable domains, suggesting a phishing or malicious content delivery attempt. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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 https://smidgel.ru/uplcv?utm_term=lightroom+crack+version+download PDF link annotation
    • https://pisangmanis.com/contents/files/84040434540.pdfIn PDF document text
    • http://capableapp.com/uploads/files/41056927064.pdfIn PDF document text
    • https://ekoelprom.pl/public/images/editor/file/bosupafamolubumora.pdfIn PDF document text
    • http://www.leads-bd.org/app/webroot/js/ckfinder/userfiles/files/11679456156.pdfIn PDF document text
    • http://ahxxzx.com/userfiles/202109/file/15795682266.pdfIn PDF document text
    • http://fteq.ru/files/file/bonijovufiw.pdfIn PDF document text
    • https://nidi.mk/ckfinder/userfiles/files/43275996534.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/17ac1febf5d7455a36289647a946109b/17689610260.pdfIn PDF document text
    • http://goldenbaycruisesagent.com/userfiles/file/bunilij.pdfIn PDF document text
    • http://sujitonweb.com/userfiles/files/ruwejanudogiwero.pdfIn PDF document text
    • https://chptravel.ir/data/file/moken.pdfIn PDF document text
    • https://gimenezricarte-deltabogados.com/ckfinder/userfiles/files/82154129872.pdfIn PDF document text
    • http://hortherbpublisher.com/files/upfiles/file/80086862946.pdfIn PDF document text
    • http://xn--h1aaebajlcgx.xn--p1ai/sadm_files/29928527401.pdfIn PDF document text
    • https://lazeo.nl/userfiles/file/novikanivaz.pdfIn PDF document text
    • https://greenboo.vn/uploads/files/wawiwiritikuligavujatafu.pdfIn PDF document text
    • https://cissud.com/uploads/ck_editor/files/5707701806.pdfIn PDF document text
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/deaecd1a335dc363d0670c69e201ce1f/nolenegig.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/161341088c0d25---22166985056.pdfIn PDF document text
    • http://jkbprivateiti.com/userfiles/file/26987775039.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16135be091b86f---jepulepumapu.pdfIn PDF document text
    • http://vitrine-prof.com/files/41896640978.pdfIn PDF document text
    • https://bselink.com/userfiles/file/61023223832.pdfIn PDF document text
    • http://yearbookplus.com/uploads/ckfinder/files/wuweveteja.pdfIn PDF document text
    • https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/psi5hdbopt2kkv8tlvllfsmvml/nigexivawagaveteme.pdfIn PDF document text
    • http://chiesamadremarsala.eu/userfiles/files/17902196520.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_off0000dc04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC04 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f416.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF416 17244 bytes
SHA-256: c670616acca6c58337001aecb0814c6ed3f007695b55b4aafd48e7a1291b8c39
font_02_sfnt_off00012094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12094 11020 bytes
SHA-256: ab5764db66af51cbc7bc48dcf48294f7bb9eb6be51abe05cd336d9dfa82f39e1