Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eb69da9908300cc…

MALICIOUS

PDF

82.7 KB Created: 2021-09-19 03:48:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: aed0af6382fe73cd8aa06adc1b028555 SHA-1: dc0be7a56a887cf97e290afbb035026826318536 SHA-256: 2eb69da9908300ccefb0c3d31a61bc7d76c347c89f04739dda7df09083e66540
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, as malicious and likely phishing-related. It contains a large number of embedded URLs pointing to disposable domains, suggesting an attempt to distribute malicious content or conduct phishing. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://smidgel.ru/uplcv?utm_term=how+to+delete+mobile+data+usage+in+android PDF link annotation
    • http://bumsnab.ru/uploads/files/87657683165.pdfIn PDF document text
    • https://wyslijpaczki.pl/app/webroot/files/userfiles/file/31288070013.pdfIn PDF document text
    • https://dongcohonda.com/userfiles/file/24949012249.pdfIn PDF document text
    • http://insei.eu/userfiles/files/juniwarajovitakamoribe.pdfIn PDF document text
    • http://www.portaldasfreguesias.com/portugal/vianadocastelo/vianadocastelo/geraz_do_lima_sta_maria/ckeditor/ckfinder/file/tufetokipasi.pdfIn PDF document text
    • http://mitchelllawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/mosafovumugotobizomesiru.pdfIn PDF document text
    • http://doradcyprawni.com/images/pliki/govirebogitakeg.pdfIn PDF document text
    • https://laflammerouge.ch/userfiles/files/xekazesedogojoruvikanoxo.pdfIn PDF document text
    • https://cantarefides.ro/admin/userfiles/file/33831558623.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140d4a3deae8---fopodupuxoxejadonezoru.pdfIn PDF document text
    • https://milosislandrooms.gr/userfiles/file/93216579800.pdfIn PDF document text
    • https://eastmangroupllc.net/ckfinder/userfiles/files/50328027864.pdfIn PDF document text
    • http://cy2hand.com/userfiles/83815233702.pdfIn PDF document text
    • https://xpress2.eu/ckfinder/userfiles/files/12198323114.pdfIn PDF document text
    • http://savytrading.com/userfiles/file/pamigefinowapovojiga.pdfIn PDF document text
    • https://renesens21.com/ressources/upload/files/50579980724.pdfIn PDF document text
    • http://tochuchoinghi.org/files/dekonezofado.pdfIn PDF document text
    • https://wwa.bdbabymart.com/app/webroot/ckfinder/userfiles/files/40252278918.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141421eccd50---xaduzetajopu.pdfIn PDF document text
    • https://beldapromosyon.com/calisma2/files/uploads/42270791315.pdfIn PDF document text
    • http://chromavials.com/d/files/sifelamusagutux.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_off0000dcb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f4ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4CE 10908 bytes
SHA-256: 66cb0600ad60c7d6663438bb26b8414d0d4b6b546e11913c1698d10e9e70d607
font_02_sfnt_off00010dcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DCD 18480 bytes
SHA-256: 3ab60d65d7425200f9d8be933df959244cf5151b47957271e71d2113ad976964

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