Malicious PDF — malware analysis report

Static analysis result for SHA-256 a322c29fb51e911e…

MALICIOUS

PDF

91.8 KB Created: 2021-09-03 05:32:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: a2289a0c1a7857a3645623c55e37dcf1 SHA-1: 0672df35e84321e8acf92050ccf71950c2ed7faf SHA-256: a322c29fb51e911eb01981e0b1ca5150e94dcf786f58cadbaebfba6e98aaeffb
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs pointing to compromised WordPress sites, suggesting a link farm designed to redirect users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were extracted, the presence of a download button lure and the overall structure point towards a malicious document intended to trick users into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608abb3bdde05---vogomapiwiletonamusamoris.pdf In PDF document text
    • http://summithigh49.com/clients/3/33/3334069ac8a672cbece4a9536eb221cc/File/sevunopapafowabisaxov.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/161121257f2a79---xexowa.pdfIn PDF document text
    • http://www.communityheroesproject.org/wp-content/plugins/formcraft/file-upload/server/content/files/16094587b3269e---75384176064.pdfIn PDF document text
    • https://gachbinhduong.com/upload/file/dafijixojuxunuboluwevadex.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/45d3af2a7ab9902213e36909f40ce096/filigitobibosak.pdfIn PDF document text
    • http://www.de.ruben.pl/ckfinder/userfiles/files/siwajuroxasugulap.pdfIn PDF document text
    • http://i-dron.cz/data/file/86732509234.pdfIn PDF document text
    • https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a005a7e2917---78737957333.pdfIn PDF document text
    • https://ssekolkata.com/ckfinder/userfiles/files/79992202637.pdfIn PDF document text
    • https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/95374975cb65c831e93d857d9b36e937/zezulatos.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca28cf0a68---16885625862.pdfIn PDF document text
    • http://dieukhactransam.com/uploads/files/fereso.pdfIn PDF document text
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a07fa735f41---36262657940.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608208ac2167e---bezolavi.pdfIn PDF document text
    • https://maconlux.lu/userfiles/files/55381432479.pdfIn PDF document text
    • http://poorclarescork.ie/images/joserazubozedewutuvo.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/tljif3vqnn4enrth53c4iuki36/88770079087.pdfIn PDF document text
    • http://szalkasszorutacskok.hu/app/webroot/files/content/files/52871238305.pdfIn PDF document text
    • http://rilta.net/userfiles/files/vasogefolek.pdfIn PDF document text
    • https://proia.bg/userfiles/file/82047985227.pdfIn PDF document text
    • http://asijskepotraviny.cz/files/file/41914871584.pdfIn PDF document text
    • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a61140b30e---fenoxepeg.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=software+testing+principles+and+practices+srinivasan+desikan+gopalaswamy+ramesh+pdfPDF 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_off0000ff55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF55 11500 bytes
SHA-256: 7f936749afa5895c716008e93707219681a2b376e48d8144c39b12f17b873748
font_01_sfnt_off00011a3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A3B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001324d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1324D 17948 bytes
SHA-256: e44e015b5669b269a4de4f67f4fe92a45bc52ddb387b148ea6b31f8d92821ae4

Open this report in the interactive analyzer, or submit your own file for analysis.