Malicious PDF — malware analysis report

Static analysis result for SHA-256 36dca10a82e8aa1e…

MALICIOUS

PDF

79.8 KB Created: 2021-03-10 02:31:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 3f96e34c63605b645900b78642a2b37a SHA-1: c106237df05396d451733860c89e7926a4f9b255 SHA-256: 36dca10a82e8aa1e053ad0738a776281cdc213d77b37ffb36119f32b204205f2
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://nipisod.ru/strik?utm_term=escudo+de+costa+rica+para+imprimir PDF link annotation
    • https://cdn.sqhk.co/xasurila/ggVSHjg/easy_care_pulse_oximeter_ec_2970_price.pdfIn PDF document text
    • http://dewafev.22web.org/pasemano.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403947/normal_5fd13b84b5e44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495400/normal_6026a97f73c5c.pdfIn PDF document text
    • http://idealsit.space/words_that_start_with_xiegfuhy.pdfIn PDF document text
    • http://verifybadgehelp.com/english_speaking_for_beginners_pptn6vnx.pdfIn PDF document text
    • https://cdn.sqhk.co/lixipadiwel/iU7oJXD/lerilu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375891/normal_5fcc3c3e6f0e3.pdfIn PDF document text
    • https://cdn.sqhk.co/noneniwetav/jalhegc/balolanikova.pdfIn PDF document text
    • http://123dutch.com/kixedesecr3.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/xopugup/social_media_marketing_resume_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/caller_tune_baby_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kegovev/xosigutuzupakixita.pdfIn PDF document text
    • http://kifemulawej.epizy.com/miller_dialarc_hf_3_phase.pdfIn PDF document text
    • http://malebujezasipip.rf.gd/21240251608.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/personality_types_myers_briggs_explained.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/sosukexawiji.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_off0000f7b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B1 5144 bytes
SHA-256: a29e3d349be61fb1305a48d3d7d8d93bc23f6b0695db5707a7cf311d577d0bba
font_01_sfnt_off0001091c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1091C 12672 bytes
SHA-256: ba549f7fa9f6e4c9d9126c070c8794fa4216aeae246cef5cd7ac1a72abf242ad