Malicious PDF — malware analysis report

Static analysis result for SHA-256 119ad3629683228a…

MALICIOUS

PDF

74.1 KB Created: 2021-06-25 08:19:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 10ffa5acada3efe212d0d7fa57e51759 SHA-1: ab0a4abfc529d2381b20992bcc0287f9e417bd61 SHA-256: 119ad3629683228ab085060bf7cbfcc251e1815cd75df357d991af45bf9f749a
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links pointing to compromised CMS upload directories and disposable hosting, suggesting a link farm designed to distribute malicious files. The ML classifier strongly indicated maliciousness. While no scripts were directly extracted, the structure and numerous external links imply an attempt to redirect users to malicious content, likely a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://lookkorea.net/userfiles/file/27675776975.pdf
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acf12d32504---sagizojedawima.pdf
    • https://digidatadecolombia.com/wp-content/plugins/super-forms/uploads/php/files/361a666e1c12058a8f62e9fde831afb8/8339341797.pdf
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/0bd1b08f3509d0feda391ac3b8930119/gojefarewiweboji.pdf
    • https://www.ideaklinikizmir.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075e4a8c4875---84569805503.pdf
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c0db20dafd7---gejofu.pdf
    • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/a3cacd3f27a7923e07cb9b2cbdb7e86f/57262458555.pdf
    • https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/7oi5g3pf9mmh85kqc22o56p5k2/44163686697.pdf
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4ec27e563---55732642313.pdf
    • https://susta.vn/userfiles/file/85996179509.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606edee28a4c5---pugeduvusu.pdf
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/a96eeaff5b5690fdfa420a65d8b49171/5822029520.pdf
    • https://alutat.com/data/file/tusakutopusaxigefoxovomo.pdf
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8a602f1330---19474885182.pdf
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a16f7ef1e1b---70485843186.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=raag+parichay+bhag+2+pdf+download
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c06b.bin
3aaa3aa15e1eb7f49c101e04abc76e79fdb3702207f09fbc55f83ccca556c8ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC06B 5300 bytes
font_01_sfnt_off0000d277.bin
6c59dcd1bed5aad7fc7bdc37215adaf08ae26324eb0a67b37e41e2ec34c36b86		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD277 10484 bytes
font_02_sfnt_off0000f649.bin
ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF649 16092 bytes
font_03_sfnt_off00010b11.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B11 4324 bytes

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