Malicious PDF — malware analysis report

Static analysis result for SHA-256 88f266cf5209c7bb…

MALICIOUS

PDF

75.7 KB Created: 2021-03-12 14:44:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d98916d78b8941f4d80f347ae7b53043 SHA-1: f391f77fb7e2beed93b47ce66ffef94d56e1db21 SHA-256: 88f266cf5209c7bbd402cfad69f7dd76832da63d508bbb3c2a8952f1c5af4134
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nipisod.ru/wix?keyword=inshot+apk+premium+mod PDF link annotation
    • http://simkosa.website/jomalesixeweniqz9jd.pdfIn PDF document text
    • http://lnstagramverifiedbadge-form.com/metformin_xr_vs_srtm26a.pdfIn PDF document text
    • http://joxexezukefu.22web.org/faramigamejinivego.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370286/normal_5fde3af9a1f98.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381101/normal_5fc7d580a49df.pdfIn PDF document text
    • http://zekowuvaj.iblogger.org/physics_textbook_class_12_state_board.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382208/normal_5fdec851704b7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446379/normal_5fe605c90f5db.pdfIn PDF document text
    • http://vekirexime.22web.org/cisco_netacad_exam_answers_chapter_2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491148/normal_6022f5601da62.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426410/normal_5fe37f2771fb6.pdfIn PDF document text
    • http://contact-git.top/electric_field_simulation_answers_brainlyat0m8.pdfIn PDF document text
    • http://usacreditscore.info/vujelezumirobidugosu3794y.pdfIn PDF document text
    • http://zonidapobup.22web.org/97011316404.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ruredat.rf.gd/2899971050.pdfIn PDF document text
    • http://lugirike.epizy.com/63408546204.pdfIn PDF document text
    • http://mimiwuzoxul.epizy.com/46685542304.pdfIn PDF document text
    • http://menimilerawapo.rf.gd/agile_construction_project_management.pdfIn PDF document text
    • http://pibanifadedo.epizy.com/short_reading_comprehension_worksheets_5th_grade.pdfIn PDF document text
    • http://josesawi.epizy.com/historia_de_los_patriarcas_y_profetas_elena_g_de_white.pdfIn PDF document text
    • http://sosujogi.epizy.com/5056689747.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDAC 5168 bytes
SHA-256: fec41895bf29db5de682d19f15cfcdc8da36cefbb25b5b974fb3a3d99b1a275f
font_01_sfnt_off0000ff13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF13 10252 bytes
SHA-256: 8913aa14d740bca89d102964f01ce6d7b0494178c74076c64083d36ce57987ea

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