Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ab29ec1de413ac0…

MALICIOUS

PDF

83.2 KB Created: 2021-06-27 00:18:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: c8d0361d354168fbd210f12d178d2a47 SHA-1: 5e17e219c1b395210c8f5cdf61b334c2191475e3 SHA-256: 6ab29ec1de413ac0d2d18b04057918b3921c06f922a082fcab0edec8bf6d8b9b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites, specifically within form upload directories, suggesting a link farm designed to distribute further malicious content. The ML classifier strongly indicated maliciousness. While no scripts were directly extracted, the structure and URL patterns are consistent with a phishing or scam campaign that leverages compromised infrastructure to host and distribute malicious documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 5

  • 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://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096d4cf87b07---72350551618.pdf In PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/16086eeb6a0c79---19836871044.pdfIn PDF document text
    • https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/7e71caee3d9340980d21cc368e8e940a/tulurarur.pdfIn PDF document text
    • https://securitydm.rs/slicice/file/72696110502.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c077ceafef8---7382780282.pdfIn PDF document text
    • http://hoctienganh123.net/upload/files/gabozepilirotavokanepefim.pdfIn PDF document text
    • http://rafaelokazakov.com/file/golixamiwupedojuveguluf.pdfIn PDF document text
    • https://decoveinvestment.com/userfiles/file/76228352908.pdfIn PDF document text
    • http://rolmech-strzelno.pl/Upload/file/66770118956.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160871931de26f---gaver.pdfIn PDF document text
    • https://innovaciones-plasticas.com/imagenes_cont/sitio/documentos/xuvalidowap.pdfIn PDF document text
    • http://www.melloecastro.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087ade8c3edf---11085141864.pdfIn PDF document text
    • https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/fdf6givgrjum9lgo2ro3nmj18r/zokikizutinumad.pdfIn PDF document text
    • http://clear-es.net/yamituki-n/uploads/files/1620197808.pdfIn PDF document text
    • https://gulyaskantin.hu/uploads/frontend/files/libes.pdfIn PDF document text
    • http://asokmontridental.com/userfiles/file/95374796063.pdfIn PDF document text
    • https://prtl.pl/userfiles/file/dixam.pdfIn PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a06c7bd5481---sagobojotun.pdfIn PDF document text
    • http://dh-cell.com/ckfinder/userfiles/files/bigunopujizeb.pdfIn PDF document text
    • https://superpart.com/files/92802236614.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608a036b9ced4---65102889343.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/1607a00ffad58e---lulevunabi.pdfIn PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ba471a2f6e2---kokibexulebigida.pdfIn PDF document text
    • https://forumhotel.by/wp-content/plugins/super-forms/uploads/php/files/f1300gjfkm2q0rbacho10ofv06/17802200735.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=picking+up+purl+stitchesPDF 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_off0000e2bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2BD 10564 bytes
SHA-256: 729a68cd328119684a96ba3ec981d55b31732af3b6ae3d209c69d8b0f9989d74
font_01_sfnt_off0000fac5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC5 16908 bytes
SHA-256: e676cdf504f559e7d4f764c3795a7ccbd285cbae6f7aaf8a84be032522351a6b
font_02_sfnt_off0001262f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1262F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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