Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eacd57f50c57ed0…

MALICIOUS

PDF

87.1 KB Created: 2021-08-14 04:05:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: db7c69fc1f58d5a8230b314f6f3ef1be SHA-1: b5a72d322daa8cefe2fadb81beddbc160aa821bb SHA-256: 2eacd57f50c57ed06ccac44c2f51808556855840d16dacecb5dcff3cfbdac32b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to other PDF files hosted on various domains, suggesting a link farm or SEO poisoning tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a malicious document designed to lure users or manipulate search engine results.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 6

  • 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.
  • 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://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d15af649a9---75012793842.pdf In PDF document text
    • http://macierz-grodziec.org/files/file/29785632237.pdfIn PDF document text
    • https://allcreaturesinc.com/files/files/zejumidiguvowotabed.pdfIn PDF document text
    • http://aklond.com/UploadFilesfile///2021050407341270.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/085d74a2820336b01c835d8a60005af3/82077338178.pdfIn PDF document text
    • http://absigorta.come/file/japadowobakuger.pdfIn PDF document text
    • https://careeraccelerators.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16076115fafb39---deguxiz.pdfIn PDF document text
    • https://dnsbp.com/all4help/fckuserfiles/file/3928182563.pdfIn PDF document text
    • http://maynenkhiinverter.com/media/ftp/file/fomanuniv.pdfIn PDF document text
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/e90aeea93474ebab5f8bccfcf207d62a/jeroxiwomemezafupabepu.pdfIn PDF document text
    • http://aydinservis.com/ckfinder/userfiles/files/58004377956.pdfIn PDF document text
    • http://ri-rm.ru/userfiles/file/topuxajum.pdfIn PDF document text
    • http://namngonviet.vn/user-/files/67175460199.pdfIn PDF document text
    • http://teplospectr.ru/images/files/teratajulabodupanax.pdfIn PDF document text
    • http://espacioschillout.es/images/admin/file/82549627651.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606fa01281e7b---migizotapikibuzenesutow.pdfIn PDF document text
    • http://lycee-elm.org/userfiles/file/kagaxuzuzenitu.pdfIn PDF document text
    • https://www.northernillumination.com/wp-content/plugins/super-forms/uploads/php/files/06caaf979560c4721da635338d62a5ff/tubuvibizimavodo.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aea1324ff7e---47323059751.pdfIn PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a63af5d88b4---wofozuka.pdfIn PDF document text
    • https://nisahanpin.com/calisma2/files/uploads/gutasawanemo.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/16097e2dc5e94d---puxoxemuro.pdfIn PDF document text
    • http://fine-cottage.ru/userfiles/file/vaxituzelumanuwuzokenutow.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/2acb45f02a7513549dd56f3f2ee388db/moxoviwu.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d1fb6b8e2e---50877710949.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=resumo+do+livro+peter+pan+editora+salamandraPDF 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_off0000ed17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED17 10764 bytes
SHA-256: 0f3170101afd3ddd857b99c03b4b521894aec625b3cca66dbe76615dd01f1ef0
font_01_sfnt_off000105d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105D6 19220 bytes
SHA-256: 186b69527d092ac90d4f86bdb0c2fdcaae16bde9fb83f6398be855fd62736c84
font_02_sfnt_off0001351f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1351F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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