Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c14136e1f8bef42…

MALICIOUS

PDF

70.3 KB Created: 2020-11-10 17:18:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 21c589c50b52b80109b471f7770c2c62 SHA-1: d32897e182bdb03fa0530e2f5bec81539d017274 SHA-256: 9c14136e1f8bef42053c5860bc135aa35d5a96464448db3d4449060dc2e67e76
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 0.9997

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://traffnew.ru/123?keyword=black+ops+4+zombie+classified+maps PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388065/normal_5f908064d8373.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379229/normal_5f8cc82541aa5.pdfIn PDF document text
    • https://rupodekopo.weebly.com/uploads/1/3/4/6/134642208/ligusixetezev.pdfIn PDF document text
    • https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/5ba0219.pdfIn PDF document text
    • https://kenilajapa.weebly.com/uploads/1/3/1/0/131069910/sorelonirijowijejej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fuwawibu/composite_figures_worksheet_7th_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75bec48d-b386-4af6-85b1-23f77cb86879/frets_on_fire_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/witovivuxubezizilak.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/brecksville_car_wash_brecksville_oh.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89c165f2-8162-47ef-809d-42b9d2752482/kugixivawigipike.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f5a7abd-fbd6-435f-9579-da1250d56f4f/31252746052.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5C4 5200 bytes
SHA-256: 411661b4f9b7e6d5744e0b76c0d32a5a2b0205bf4d5317ce42d9cf8b221c2bc8
font_01_sfnt_off0000d77c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD77C 11504 bytes
SHA-256: 0f26de14db04f20f45287cece0cf6c49812c68dbba4c4f61fcc71d37ec5a6cc8
font_02_sfnt_off0000fe78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE78 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e