Malicious PDF — malware analysis report

Static analysis result for SHA-256 2557cead70994931…

MALICIOUS

PDF

77.9 KB Created: 2021-04-07 21:42:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 03d7b1da4514ff22ba2df06bdea15547 SHA-1: 550025954918ae8c3f1079f217d008ddaac980ef SHA-256: 2557cead7099493191469e210e2b7391223918238f114a3781b1040f36c9e89b
96 Risk Score

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 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/award?keyword=workout+routine+at+home+pdf PDF link annotation
    • http://jaxifas.getenjoyment.net/78146513305.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427313/normal_603a2b7e6e568.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383923/normal_6001bedeaa881.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476593/normal_5fca4fb2d7c46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377704/normal_600b60dba1035.pdfIn PDF document text
    • http://gadivawiw.sportsontheweb.net/vavisogiz.pdfIn PDF document text
    • http://renijulemigato.iblogger.org/rendezvous_mit_rama.pdfIn PDF document text
    • http://rakapugijumub.sportsontheweb.net/hng_dn_chuyn_file_hnh_nh_sang.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490529/normal_6035cb86289d0.pdfIn PDF document text
    • http://fadewujetenuve.mywebcommunity.org/nexuwolalelogaxaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/begijufadi/vupunofiravojafasa.pdfIn PDF document text
    • http://wokidomogu.onlinewebshop.net/vobosufek.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/line_graph_vs_bar_graph_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/jadofofiguneb.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/fegifijazuwuxafurazufik.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/nursery_school_admission_form_format.pdfIn PDF document text
    • https://s3.amazonaws.com/waduzirader/ruzivulotoniduxatasega.pdfIn PDF document text
    • http://roxonotagake.rf.gd/31462614944.pdfIn PDF document text
    • http://wegadikas.epizy.com/cashflow_board_game_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/gavapozalilup/kho_kho_game_score_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/48621302360.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/bob_sport_utility_duallie_double_stroller_-_orange.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/rumopalaxukejapugodenuse.pdfIn PDF document text
    • https://s3.amazonaws.com/wanalovum/install_cinema_apk_android.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_off0000f105.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF105 5148 bytes
SHA-256: 4a927cb93d26c60b89839d399fcb30889ba21150d5edd5a62070e3deab787f20
font_01_sfnt_off00010273.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10273 11324 bytes
SHA-256: 4d9f064c8ded39e5b44361904793366535b1f990c844a417c8f4ff17da6a89a7