Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd3e61d3461b17b4…

MALICIOUS

PDF

140.1 KB Created: 2021-06-26 07:51:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 1dd9ef8340f12d2c254c2b93eb407392 SHA-1: f5dc1b642dee1e8d8cdaf6733fad6a922c27c815 SHA-256: dd3e61d3461b17b4555cd0e9d45e0b974e9bd78cf7fd1d060aab7228cf7ee0ed
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external URIs, many of which point to compromised WordPress upload directories. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or redirecting users to malware. The embedded JavaScript is likely used to facilitate the redirection or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://crewmak.ru/uplcv?utm_term=social+justice+issues+for+teens PDF link annotation
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/33dd0f5ccf16ce77bdbc4e1219a93f64/62573202390.pdfIn PDF document text
    • https://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/7cnutigud0k4cebo3ferin4j87/vokagegasin.pdfIn PDF document text
    • http://aitrans.org/UploadFile/file/F1202105230432382798.pdfIn PDF document text
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/a119e2b6dd994f42ef5edd75c5d02f29/sinomuponen.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/begltl60en73e4289of4mucq1l/zirodusokamubufe.pdfIn PDF document text
    • https://www.themeshcowork.com/wp-content/plugins/super-forms/uploads/php/files/e6212f81836e567f1f2346fb0b6e75b8/mawutezejubavavujujozuzo.pdfIn PDF document text
    • http://sibleyestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/74821892365.pdfIn PDF document text
    • https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/4348533623b985e580d5ddd65d09cc84/18482768423.pdfIn PDF document text
    • https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/b0d4cdaf54c97917bf8e7393fb08a756/jonumifotenavupixevino.pdfIn PDF document text
    • http://zabradli-znerezu.cz/userfiles/file/gozinezivifozizuwobuwovan.pdfIn PDF document text
    • https://aduanaldelvalle.com/userfiles/file/42283615732.pdfIn PDF document text
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/81obq24psn79m8ln31f4teeidi/24568646732.pdfIn PDF document text
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/510f566fc9afde56f637e23090bafd8a/fifikedixa.pdfIn PDF document text
    • https://repare-ton-smartphone.com/userfiles/file/15161953278.pdfIn PDF document text
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c8dcec2cbc3---73486561385.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/samiecvnfme5i8mfrsn0qjauhv/vetuz.pdfIn PDF document text
    • http://bezagsecurity.cz/userfiles/70502206957.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cabc562581---87791571238.pdfIn PDF document text
    • http://brandnewgoods.net/userfiles/file/warenijekexalipaboxaluke.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dbe6759e55---90159889851.pdfIn PDF document text
    • http://gold-carsales.com/js/upload/files/46460945154.pdfIn PDF document text
    • http://3dprofi.net/images/uploads/file/80532375745.pdfIn PDF document text
    • http://janyska.home.pl/_mjanyska2013/fotki/file/wivepoxamom.pdfIn PDF document text
    • 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_off0001c12e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C12E 10636 bytes
SHA-256: 4a418ba7d3ec81461c82223454fa9090ef8c92d003eb4f17f96efc4b40b57687
font_01_sfnt_off0001d992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D992 18720 bytes
SHA-256: 5c55cfd706a6360916cddab74c09714446a1c51fab57493a47e02cae724c6477
font_02_sfnt_off00020a5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20A5C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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