Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9d15bbcf4888c54…

MALICIOUS

PDF

78.5 KB Created: 2021-03-26 10:47:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: eb89dc88572c20f6f7ae04068276b655 SHA-1: 527c53b49f3e47603e16ccfaa55acf27ba5eb989 SHA-256: d9d15bbcf4888c54c01c57c3c91b2404043610bce768df4f53048d58c3c4c793
66 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with a high concentration pointing to disposable hosting and exhibiting link farm characteristics. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of many external URIs suggests an attempt to redirect the user to a malicious site, likely for further payload delivery or phishing. The document body's content is heavily obfuscated and unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • 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://soxebez.ru/wix?keyword=qhdtv+apk+2019 PDF link annotation
    • http://detonic-buy.website/dojijotidawoguvekitunukpl12c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465705/normal_6028ee6e21d9d.pdfIn PDF document text
    • http://art-practice.org/encuentra_las_diferenciasdjc6j.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421209/normal_5fe6e4cf8c394.pdfIn PDF document text
    • https://cdn.sqhk.co/dadakafopina/ggXhbjf/voice_recorder_audio_recorder_sound_recorder_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383444/normal_604e1cec9c4b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389352/normal_5fe556bcd46d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370746/normal_5fd2fb7216335.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/djcogjI/pm_traders_kochi.pdfIn PDF document text
    • http://probkin34.xyz/allahabad_high_court_ro_syllabus0ghb7.pdfIn PDF document text
    • https://cdn.sqhk.co/noluxokeruma/uVhcBjj/54633361983.pdfIn PDF document text
    • http://iciko.xyz/the_pigman_chapter_9_and_10_summaryy6qbo.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzozuni/fheLNif/world_war_1_causes_main.pdfIn PDF document text
    • http://zonojebiridizo.mywebcommunity.org/body_language_book_free_download.pdfIn PDF document text
    • http://xufuxenu.mypressonline.com/elizabeth_wurtzel_prozac_nation.pdfIn PDF document text
    • http://wivupivipewezap.mygamesonline.org/damenuwuwabanuru.pdfIn PDF document text
    • https://www.iptvintvIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/991b807a-c007-4074-b305-96cd8d7a74cf/java_mvc_interview_questions_for_5_years_experience.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/981a8373-2209-4bfe-b5ae-5333ba7a7fd4/full_body_stretch_routine_before_workout.pdfIn PDF document text
    • http://duribolatajofa.atwebpages.com/85000924791.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31fc4e4a-a5c4-446a-a8aa-520e93b47657/what_is_port_in_rpw.pdfIn PDF document text
    • http://varirojemixu.myartsonline.com/dumezomon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37f93fcb-160d-4dd1-9a80-352714e16c63/elements_of_music_terms_and_its_meaning.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://scripts.sil.org/OFLIn 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_off0000d319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD319 4816 bytes
SHA-256: 762c781b16c07189d8f23192cf7e8b4f6ac0fa25e99148db874be47c50927ffc
font_01_sfnt_off0000e38a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE38A 11772 bytes
SHA-256: 1905161bba8bc6526eb859cb76bf21e9810b0278bd20d7cf82e558a22c3b5e5b
font_02_sfnt_off00010966.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10966 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd
font_03_sfnt_off00011e93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E93 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378