Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f35c2695af17f10…

MALICIOUS

PDF

74.3 KB Created: 2020-12-04 16:57:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 6d2b0fe764b8ce6b894ee9c452dfbb2a SHA-1: dae1c900fc8295e835f14253037b385befda85cf SHA-256: 3f35c2695af17f107a1d5a5ad9a860a1bf5872357208e8a89c07b54482c1f670
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://traffnew.ru/strik?utm_term=physical+geography+laboratory+manual+10th+edition+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402262/normal_5f9200f1a7fcf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476434/normal_5fc1490465350.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411219/normal_5faaf0dc818f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380090/normal_5f9d5c7112ab6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370996/normal_5fc8fb86546f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498992/normal_5fb6ca7d04685.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451744/normal_5fa92428704e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446155/normal_5fc423915b93b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369633/normal_5fb6897f12275.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d7958f1-038e-4aab-bb6a-cd4aa140f9eb/electrical_cable_size_chart_amps_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/alfacalcidol_davis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37e5fc48-6e7d-49a5-aeb8-8ac35b8fae12/gosuseveremamowatuwo.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/cascaded_h_bridge_multilevel_inverter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81e2f174-fd68-4ef0-bcc0-de1959d07cda/gowibikopitiwirijepawota.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e07b1f26-c39e-4a10-90bc-559153b5969c/2167744421.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_off0000e243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE243 6016 bytes
SHA-256: c6de67965072fc56abccf499063f42a5ba921e573d71f5d22ea9dd6f0be36f5a
font_01_sfnt_off0000f6ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6AD 10964 bytes
SHA-256: 4ed7eb333277b089335926d238914b40f7f5eb703c84d31de0963c72e92a5e95