Malicious PDF — malware analysis report

Static analysis result for SHA-256 67ee99c0e3431452…

MALICIOUS

PDF

80.9 KB Created: 2021-03-23 18:50:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 97ae974ff944851a097a424ed2d7f34e SHA-1: c55f164ae56f492e8ee8377645dcbd70c829c54b SHA-256: 67ee99c0e3431452db31f42ff17855b9b6826122044402f86ac7a4d2f025291e
226 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF documents, many of which are hosted on disposable domains. The primary malicious URL identified is fokemale.ru, suggesting a phishing or malware distribution attempt. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document may also be used to trick users into providing passwords for encrypted archives, a common tactic to bypass security scanners.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://fokemale.ru/wix?keyword=density+mass+volume+worksheet+with+answers+pdf PDF link annotation
    • https://cdn.sqhk.co/lojibuwe/jajbgi1/bimatoprost_eye_drops.pdfIn PDF document text
    • https://cdn.sqhk.co/gabadifofibo/gcigedN/baruwujuriwagovudotupetix.pdfIn PDF document text
    • https://cdn.sqhk.co/dadirowuj/hojZTWw/82792754785.pdfIn PDF document text
    • https://cdn.sqhk.co/kototokim/cggjhhc/japanese_alphabet_song_hiragana.pdfIn PDF document text
    • https://cdn.sqhk.co/disonixures/fibDid3/child_inflatable_alien_pick-_me-_up_costume.pdfIn PDF document text
    • https://cdn.sqhk.co/gotubosif/igHcgfh/57063281323.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372399/normal_60122412e870c.pdfIn PDF document text
    • https://cdn.sqhk.co/bilanogakiw/cghdtr3/99948086299.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411916/normal_600c45f586068.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380527/normal_5ff97cc3836f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496389/normal_6029acdd111ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414166/normal_600c6931d5460.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://46a1ac71-481d-4a85-b709-d40f3a189542.filesusr.com/ugd/143c98_6f25e860a25c4af09b3790051eed9c46.pdf?index=trueIn PDF document text
    • https://6c8027e1-9878-41b3-a9ef-32ba2b6bcd02.filesusr.com/ugd/185811_de17b1cf3c894b35b36e43f42d17f177.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1120fc32-c721-4419-bcc5-cf1ef3f9b6d4/96722042073.pdfIn PDF document text
    • https://3682d434-6e27-4ac8-9ac2-d3ec24fa429c.filesusr.com/ugd/9b5f63_6079fa2072934008bbd4715b6e71dcce.pdf?index=trueIn PDF document text
    • https://e791dc30-71fd-4519-a75e-453748eb9c32.filesusr.com/ugd/8a5fcf_a7297f6c61ff4e298e666e4660171a38.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a817f77-868e-48b2-8af5-679ec5739a92/xudotidefigirununenux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12ae8162-d590-4d28-855f-0d1262768e3d/rufudovi.pdfIn PDF document text
    • https://c0b8f06b-4e98-4d3d-89ef-2f08caba629a.filesusr.com/ugd/0c8cc8_b22fdd19c3a64923b50951afba74c80f.pdf?index=trueIn PDF document text
    • https://df6a9abb-74f3-47e1-b359-fe6d1019da36.filesusr.com/ugd/7921d2_992895a415b64d93aca7a5ffed6c562c.pdf?index=trueIn PDF document text
    • https://89e5ed4a-33eb-42a6-b5f1-9fc07ea1e15b.filesusr.com/ugd/ff68bb_2c7788a7f9894a2e86e8d51981b9add8.pdf?index=trueIn PDF document text
    • https://5e3b32e6-a537-4a58-a531-ef303a468713.filesusr.com/ugd/120874_1c42aaee5d6644af8454309c9f30337a.pdf?index=trueIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A8 5596 bytes
SHA-256: f31eba13a97f2ebad0600981ea9b0deff5a06b3a483cdcb1568d17a32a0a5f10
font_01_sfnt_off00010aa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AA3 13424 bytes
SHA-256: db330a1ce6eabfd79f8fa9ab6e9e55c36ce3891e256b92c13f971451fd6f069f