Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4df286e50549ce3…

MALICIOUS

PDF

64.4 KB Created: 2020-11-20 11:25:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: c04f3bbe0789123d88f0bed6e4bda62a SHA-1: df2db17a660b2cd4d0b250409e6768d0418ef7b9 SHA-256: f4df286e50549ce319c9f9156106d440fad761ee866faf5ccaee21362f2a1dd9
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://traffking.ru/strik?utm_term=free+boomwhacker+music PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384831/normal_5f964aebe7530.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370087/normal_5f986aac0859a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470826/normal_5fb2bd241eb17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476432/normal_5fb6cc98ce75a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368989/normal_5f8913d4e8269.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/pizexopenaxu/clash_of_clans_all_cannon_levels.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/95775603892.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/j_kenner_book.pdfIn PDF document text
    • https://s3.amazonaws.com/giwurode/wamuzegurezera.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/examen_ceneval_exani_ii.pdfIn PDF document text
    • https://s3.amazonaws.com/fowonaxul/78849334402.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/information_about_planets_of_solar_system.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/fedib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89eab465-6785-49b9-bc24-4f20aad8a89f/gadotoladugerosuvexi.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_off0000be37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE37 5256 bytes
SHA-256: bf7af7fa30d258d37bdef46f8eff1fc186e8810f94b6cc2af36ebf3cccc80ba2
font_01_sfnt_off0000cffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFFC 10884 bytes
SHA-256: 2a6519ff67bcad5c681501517c993913795a64231b613a36497653288428fd7b