Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c0b584a78841476…

MALICIOUS

PDF

74.5 KB Created: 2020-12-25 04:21:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f999a31ffcfcad813779433bd4101724 SHA-1: 3b0505d6d2b363a009c88cc61a6b4231f621ea7d SHA-256: 3c0b584a78841476d9b87cbe38f23becf84f193d7e1118e2171d49564911f762
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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffe.ru/123?utm_term=24+hour+check+cashing+los+angeles PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386363/normal_5fc03920b7f70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417817/normal_5fcafbb2b1e67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377905/normal_5f8e73548b8b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445889/normal_5fb72646c43d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420747/normal_5fa8d930bb3b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413587/normal_5f9b587078fef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490934/normal_5fb9fa7edf276.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450256/normal_5fb4c2fa4bfe1.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/sinamozagemoger/18551155913.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/66996754020.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/jocelyn_flores_easy_piano_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c33b824-a04f-4b92-9e8f-ee24f8b038d9/pro_supps_hyde_v2.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/nizujazojiv.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/24505476955.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/44703076014.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/355976b5-79b8-46ba-9df7-6cb7a3ed90ff/88955783240.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_off0000e774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE774 5248 bytes
SHA-256: 91c98f0a53df698edad8950460b11f737b5bb066dc124fc5c2f5accaa8e024ff
font_01_sfnt_off0000f94c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94C 10424 bytes
SHA-256: d1b931458fcd787ce333b2dbffdaee882b1b04bae39e4cd7fa04fd916282661c