Malicious PDF — malware analysis report

Static analysis result for SHA-256 6860cf2dd3ebf352…

MALICIOUS

PDF

88.2 KB Created: 2021-06-25 17:09:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: d06ba1fedf4ebc2c3e2ce31c26d282fb SHA-1: e9a7d6248ed843ddec8442ceb6235cfb80c9c932 SHA-256: 6860cf2dd3ebf35253f29194470075173e6aa962d6beb91993da1c1302f8b6a9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external URIs and links to compromised CMS upload storage, indicating it functions as a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a malicious document designed to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

Heuristics 6

  • 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.
  • 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://medvor.ru/uplcv?utm_term=how+to+shade+anime+eyes PDF link annotation
    • http://hongdanhaudio.com/luutru/files/15783072959.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/18be5f6c8b132e65d1fac6ace3e4fe78/fosewifaniriwokigasitaxu.pdfIn PDF document text
    • http://joyearland.com/ckfinder/userfiles/files/17936309285.pdfIn PDF document text
    • https://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/778f8cbms3u22qti33md5g6837/44697824565.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b434cd3f056---paxesosa.pdfIn PDF document text
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/l4i5fb9v3u6di4r3lf438hjttl/xisizadovaweteger.pdfIn PDF document text
    • http://mfcwestenkwartier.nl/beta/userfiles/file/larufaj.pdfIn PDF document text
    • http://aklond.com/UploadFilesfile///2021061516435994.pdfIn PDF document text
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606e909f3064f---pogubipikujimuvu.pdfIn PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609c55f022c36---xaparigesuluviboma.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16076a5af3d1bb---42797694956.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bdc67801ca---zesuje.pdfIn PDF document text
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/72gdj1rdqv5f1b1t4mf35oadjp/vobiluvu.pdfIn PDF document text
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/nskb50soopt0iard8g55fnrdib/98625007812.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A5 16144 bytes
SHA-256: 319c1d6b5a9dfe45ef2c311a2d5ba00a192ff2e3c7a2103ac7a27dba584f9d59
font_01_sfnt_off0000f81b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF81B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11032 10556 bytes
SHA-256: c7cbaabc2f16dd66f38033ef38079d5b66967dcae4faf16d011ca76548ec3db9
font_03_sfnt_off00012823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12823 16924 bytes
SHA-256: 7e690a6f6f2975a9de2a231ac97d66ce6810b8cfa87b07d8aec9b0cee90adb16