Malicious PDF — malware analysis report

Static analysis result for SHA-256 afee5e586c69c0a8…

MALICIOUS

PDF

85.8 KB Created: 2021-06-27 04:19:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 19013b1ea2cad9762f9334d3f1e0efda SHA-1: 199dbdc839827a0eeff46946534c56c3f32284e9 SHA-256: afee5e586c69c0a8aff1ca6ec20a22c02b67eba84b011d5193b5d3b3a9ce6284
96 Risk Score

Malware Insights

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

This PDF sample was flagged by an ML classifier as malicious. It functions as a link farm, containing numerous URLs that point to compromised WordPress sites and other domains. These links likely serve to redirect users to malicious content or to manipulate search engine rankings. The presence of multiple links on potentially compromised or disposable hosting suggests an attempt to distribute or obscure malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 https://ltgtrends.com/wp-content/plugins/super-forms/uploads/php/files/6d9e902d8f18e8b6b7ad9796ba661b5a/kejuwoxozipefixalijilozu.pdf In PDF document text
    • http://benedictinoselrosal.org/ckfinder/userfiles/files/totivorinikoruvorid.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b436bca6f5b---53714238201.pdfIn PDF document text
    • http://myucmas.com/userfiles/file/wutugumov.pdfIn PDF document text
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/d254d11556dea1b932abe1329d023980/rizavazenodi.pdfIn PDF document text
    • http://zonwering-nederland.com/ckfinder/userfiles/files/9003428542.pdfIn PDF document text
    • http://famillespourstarlight.org/clients/a/a9/a9b42c05011d3bb27e7f7ec2ed30324f/File/66692906636.pdfIn PDF document text
    • https://ilc.ua/wp-content/plugins/super-forms/uploads/php/files/c381mahk6qg802v0030jj3s7v5/fanixotetusakitaginiwe.pdfIn PDF document text
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608d2737ae4c1---81985085209.pdfIn PDF document text
    • https://smithsgame.com/calisma2/files/uploads/xokifalo.pdfIn PDF document text
    • http://podlahypilat.cz/admin/file/buxuzigenukajinowogup.pdfIn PDF document text
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d05344e555a---lofokip.pdfIn PDF document text
    • http://uci.ir/userfiles/file/jodomox.pdfIn PDF document text
    • http://summithighschool1958.com/clients/71652/File/nokurar.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16085a1853234c---63353983718.pdfIn PDF document text
    • http://czdashan.cn/uploadfile/file/2021042921541573499.pdfIn PDF document text
    • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/cd2105c83f29b90e611f630542d68150/94242088763.pdfIn PDF document text
    • http://sahrugs.com/userfiles/file/xizukigerugemix.pdfIn PDF document text
    • https://loctra.net/userfiles/file/18997455838.pdfIn PDF document text
    • http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e7c26d0c9c---redovonilolotizutakugos.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/66s05am6dpgm9eeujlsjaaveiu/62255357745.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160bb77c575a9d---jigonif.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607836e1bbd26---5529434845.pdfIn PDF document text
    • http://atdawnwelift.com/userfiles/file/lejefunobumirodovirurax.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=armor+of+god+week+6+answersPDF 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_off0000ed63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED63 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010575.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10575 17180 bytes
SHA-256: 2cc476fa88a2f7c68f65ef86ae8528871c0fb3ba29b87dfdb51dab6867c96104
font_02_sfnt_off00013212.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13212 10788 bytes
SHA-256: b2912153f264709258fa50ad383294b658e0af159ca1c64d94a89dd62faaadb9

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