Malicious PDF — malware analysis report

Static analysis result for SHA-256 da88c9dd7a0a4078…

MALICIOUS

PDF

74.4 KB Created: 2021-02-24 11:55:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 32351f0f284d8de03c855c1cbd974592 SHA-1: 1c6fbcc69463ea20f0faa34f8f36f4ba81ba139b SHA-256: da88c9dd7a0a4078efa351e8e8368de14ca6e991f9884bc7b84331dc3139eff5
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 0.9998

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://druttle.ru/wix?keyword=british+home+stores+stock PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4490370/normal_5fe348f21445e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380078/normal_6019be4e15135.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454054/normal_603401a8d69ff.pdfIn PDF document text
    • https://cdn.sqhk.co/zinazejoras/jbiegjz/enemy_strike_2_mod_apk_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449766/normal_5ff7d8fc4f0fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500889/normal_60079a2c081e2.pdfIn PDF document text
    • https://cdn.sqhk.co/kawurefeki/gMnN9zv/the_vikings_game_review.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzozuni/qgcjOd8/marooned_meaning_in_english.pdfIn PDF document text
    • https://cdn.sqhk.co/mifopanikil/gigKhaN/voice_keyboard_mac.pdfIn PDF document text
    • http://serikanipesemo.iblogger.org/whatsapp_for_nokia_x2-_01_mobile.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503387/normal_5fd1e3c561e8d.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/vovabagubajegeb/95213378151.pdfIn PDF document text
    • http://luviwozota.rf.gd/pelagiwojij.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/psychology_101_final_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/did_jaycee_dugard_get_married.pdfIn PDF document text
    • http://zetowimular.rf.gd/42503762799.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/40703787047.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_off0000e6b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B2 4912 bytes
SHA-256: 4c8ef48b62c82a0ccc2a2839df53551ea6f49074254816674d88af9606bd14f5
font_01_sfnt_off0000f740.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF740 10980 bytes
SHA-256: cc8fa4e61ed225c4b9fe32fcb61efdc889640312a8b693e826183c5670d6e27f