Malicious PDF — malware analysis report

Static analysis result for SHA-256 b52b1c0eade942fa…

MALICIOUS

PDF

59.9 KB Created: 2020-12-05 11:27:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7e559ebf225c7ae977e7b64b879e2fc1 SHA-1: 689d18cf023a4d0627870a588a8466a917d7adee SHA-256: b52b1c0eade942fa619049a18822ee976cc0672d5492e2e5e0ac77f1b5898aec
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 0.9996

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://traffking.ru/strik?utm_term=dylan%2527s+unblocked+games+return+man+2 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393889/normal_5f95aba26cfca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387821/normal_5f9308bd2e3be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406806/normal_5f946ab75ff25.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/7741dab2-1f27-4c55-8695-91e98ccff25f/jakidipimelazoza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f89aad16-0081-429f-814e-de17e538ce4c/fubuxusituvotop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e69f850b-653c-4b0c-89f8-57e7421df84a/93247612794.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/android_police_android_auto_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b12a196a-ab25-49a5-8b32-9c1a5359ec48/pescience_select_protein_recipes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a545a230-9243-45bd-be13-f3ca789f3cbb/voburadaxexel.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/desoxiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e3807ae-20b8-4c20-8ae8-b556c986236f/somojowuvijog.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/physics_hl_formula_booklet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5289ff0f-07a1-4683-87c1-561e2437f5db/rasuzalofedunoxe.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_off0000ad59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD59 5728 bytes
SHA-256: a82d93c361bed5336737b751d165f625269a5a0d12f7d0068ca71dca01374182
font_01_sfnt_off0000c0de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0DE 10028 bytes
SHA-256: 415022f977d49db2005f45d0d5fd5775f08a4c76e838d6847a03ced4cfaba050