Malicious PDF — malware analysis report

Static analysis result for SHA-256 acd501d3a2586733…

MALICIOUS

PDF

67.4 KB Created: 2020-11-13 17:08:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 3174c483191bf3dba5bcb770da5ef51e SHA-1: 23c77b06fd3ee90409d7d6b8a920ec1dbe79ec0a SHA-256: acd501d3a258673376fdc3e9530989ba720813ed6e19b0ff6306eec7997c875d
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://traffine.ru/strik?utm_term=oliver+velez+books+download+pdf PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6373407-a3a5-4c9d-a7f9-b10bb53184de/40133860300.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4246a8bd-f109-48dd-8884-af5553a700ae/45221327623.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f069eb09-6720-4690-8fb6-e00e6dbf867e/lejimiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93fc1069-d6ae-4e62-bd97-f116fcd2973e/94390640798.pdfIn PDF document text
    • https://s3.amazonaws.com/zokokamu/mr_uris_of_topaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09287828-eeb3-4576-80de-5017a0aa6db2/rusazonufawodadovapa.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/24482766442.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bdcc275-9174-435d-a04e-60528e9d220d/86955793363.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/17189477737.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00322bb7-130e-4633-babe-e8ecccba211f/58800510965.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d71fe1a0-9952-4e9a-9838-ae1f44d67942/joselanabovefudu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/134d99c1-d242-4427-9c38-34c344f40bf3/247_f_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/826a9850-e800-4f8f-b4ef-b3ba0dd12b93/5040072427.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_off0000caa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAA9 5468 bytes
SHA-256: 4af0fd57d60f7386dbb2713eed58eb3808e7aba97d48dc73ce1255bda88430bd
font_01_sfnt_off0000dd67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD67 10596 bytes
SHA-256: 1ba687a3aea4613d858d364931162f6c2307caeeb2a5c7eab870f6ac72ab29c9