Malicious PDF — malware analysis report

Static analysis result for SHA-256 59e5e196edda0cc5…

MALICIOUS

PDF

85.7 KB Created: 2021-06-30 06:22:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 368c8b9d4e47052c6d48a3cca520a5a4 SHA-1: fd7bd3e79594448f2baa7f280cca3744a91617d3 SHA-256: 59e5e196edda0cc5ab887824c20f28b0318c7c5bd6e341003a6ec73c997953a3
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm or redirection scheme. The ML classifier strongly indicated maliciousness. While no scripts were extracted, the structure and URL patterns are indicative of a phishing or malicious redirection attempt, likely delivered as an attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://beateromer.com/bilder/file/3436213788.pdf In PDF document text
    • http://stphilomenaonline.org/userfiles/file/21816623039.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/160d3b1472a473---45024971643.pdfIn PDF document text
    • http://hilltop1976.com/clients/24685/File/19772965049.pdfIn PDF document text
    • http://galluccifaibano.it/userfiles/file/genobur.pdfIn PDF document text
    • https://textosolutionslinguistiques.ca/upload/editor/file/nafelodesenupikosunebamu.pdfIn PDF document text
    • https://atamergranit.com/userfiles/file/fadutul.pdfIn PDF document text
    • https://ajitcoatings.com/uploads/60968259664.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/c4gi5idh9o5dl9pv3etfbl854q/lukefuxasagomaguzojo.pdfIn PDF document text
    • https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/b03645ad43a642a8b1c29274ac4b649f/6693434688.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af9a7a268a9---wibowijutak.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a58b4ac464c---miripelis.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0777e92314---83602769431.pdfIn PDF document text
    • https://accuratesearch.com/userfiles/file/runepijotuz.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/294cfcb9594b947541ee5273d9f8fd62/21307187338.pdfIn PDF document text
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/c3slmr4aff6ikorn0uabf5q8tr/26731841605.pdfIn PDF document text
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609315a41e6c5---84691619774.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d32325ca55---wefumazumisetojaroramego.pdfIn PDF document text
    • http://animationcoach.com/userfiles/file/vovage.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/bu9m7nheqqbc3nskl18bbv6sr2/kexanuxorifikitufuvi.pdfIn PDF document text
    • http://clairvoyantinfotech.com/demo/images/nerubosima.pdfIn PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/9ef6n659b6e91tnndmfb4408b4/wabakupenemepa.pdfIn PDF document text
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0dbd8e5320---wibitire.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=should+you+text+a+guy+after+hooking+upPDF 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_off0000ed92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED92 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000105a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105A4 16448 bytes
SHA-256: ebbec2ea643e94ad103ce5aa5cea0b98955fb58d658476972776944818419890
font_02_sfnt_off00012fcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FCD 11092 bytes
SHA-256: 7bd8d3b545b17eb7b879e1ff75e334f52064cec19ea296e78dd20ae8bf5e7c78

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