Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5ff09ad535d990b…

MALICIOUS

PDF

72.0 KB Created: 2020-11-22 03:02:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 289c81e5e23ecf5c295c0b13c2ff419e SHA-1: dccde11f4033472aafdc9c5e82c602a6a7a4c90d SHA-256: f5ff09ad535d990be115a37fe7f6193210f2cd74798f385bea608435b26fb349
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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://trafftec.ru/aws?utm_term=black+lightning+season+1+episode+11 PDF link annotation
    • https://wesafave.weebly.com/uploads/1/3/4/3/134307961/nopuzimomo_jafurelirexe_watabem_nabavavixo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366399/normal_5f8aa0a859316.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382961/normal_5faf78b233e33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474231/normal_5fb98f0da5942.pdfIn PDF document text
    • https://degusatujetuz.weebly.com/uploads/1/3/0/8/130813325/lakijufamawese-lolof-luranidit-batumote.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476577/normal_5fa5bf5f48674.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/5601d20e-5384-42ea-8e95-1a7d2ed17c2a/88228212077.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28ae7db6-7be7-4ba9-a3e2-32afe543f657/renonilej.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/la_la_la_song_pagalworld_bazaar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aada8fc6-982a-4a66-b21f-2409907ffe65/sijobarowuremapuwule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/183324b2-fd73-46b6-b5b3-d96aef6377e2/430506581.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7aeb68d8-c8a1-4f49-a211-9f58dde31aae/ejercicios_morfologia_1_eso_resueltos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02dc7bd4-2a07-46b5-aca1-14a45285a37a/solucionario_matematicas_5_primaria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c3f8a15-6a16-48fe-98ef-c0472d735534/principles_of_marketing_17th_edition_by_kotler_and_armstrong.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_off0000dd48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD48 5404 bytes
SHA-256: fa1c7109c21aef3a37c744677443d4bdb6bb582d5312bac506a4d14cb893db2d
font_01_sfnt_off0000efb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB2 10380 bytes
SHA-256: 33737992855718a5003658eadbb912b3d6d8fdabbe46e9322f44411c939d0076

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