Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3cb8cc3640591b0…

MALICIOUS

PDF

62.1 KB Created: 2020-12-15 01:17:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: da38d932cc74e0f4ccab159277ed6d99 SHA-1: 208e63ec106c047889ff71fced0d0c9683cf6379 SHA-256: d3cb8cc3640591b07d60052c6c5a232c801925a12321b6de862cf664ed6a5c80
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 0.9995

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://traffset.ru/strik?utm_term=best+buy+camelback+geek+squad PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385631/normal_5f961c1431431.pdfIn PDF document text
    • https://sefedajexoxoj.weebly.com/uploads/1/3/4/4/134479396/rokot_dixone_pakojoke_luvulikameti.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367959/normal_5fbb293b33510.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/a9f12b2aa1eeba.pdfIn PDF document text
    • https://jikajulimag.weebly.com/uploads/1/3/4/3/134319013/gener.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455381/normal_5fae198bcd9b3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0d446ab79f442f2293e00/t/5fcc99dae43f2b00a8a3284b/1607244250738/dragon_drill_mod_apk_1._0._2.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5176dd49dd124474f549c/t/5fd688fe102ca46975e92bd6/1607895295131/android_8_dark_mode.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d49a16f6d44b07be6b5d/t/5fc0facbbc819f1cf4fad3ab/1606482635997/kapugarivupopeda.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcf3a4cb1d401545ae7dd21/t/5fd6cc477fc52c206934b85f/1607912519349/dosegamebepudenetuke.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c6e78ef7301f8b326b4b/t/5fcdc22a6f0099009e83c89d/1607320106709/checkers_free_multiplayer_games_online_with_friends.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_off0000b4b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4B4 5644 bytes
SHA-256: b679f23c821d56a3cdea8df7976ffc95b3913db89f6d73e222325c75be15aa6c
font_01_sfnt_off0000c7e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7E1 10516 bytes
SHA-256: 1a17cc8dc02a3ddbe93030a95bfd0fc221aed98ed3c74a84e1456d22f9c02306