Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5b43180fe3b6904…

MALICIOUS

PDF

139.6 KB Created: 2020-11-14 15:41:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 20bb9ed1d4c0806162a5acb34e95d7be SHA-1: 123d66df5783cca1b81f46e1737124257e45635c SHA-256: f5b43180fe3b69040877cbf3bd264b9c6378d60da95988e5544cbd68361598a0
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 0.9995

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/123?utm_term=national+spanish+honor+society+westwood 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/f2f4f94f-ff86-4956-b4d5-ba7ce15c62f5/18542224775.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/71937045259.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc29acec-8e47-4473-9f03-524ac80425cb/lesson_5_creating_functions_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35aa6650-417a-433a-bd54-e0265526785e/82560046030.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/tawawopejomokumapelov.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/warehouse_13_torrent.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc87475b-5e55-4613-a916-3a7c46c386a2/freeway_fury_3_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd676dfe-22b7-48d6-bf16-eb9d36869a03/3992836464.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5cfab07-c04e-451b-ae16-8f05a4d2e878/21721118986.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/25389201631.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/d_d_5e_barbarian_guide.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_off0001e651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E651 5324 bytes
SHA-256: 23f335e1ed57e045fe7586d7c79e22e90753a58821ad973a418a193cc5ba4cd3
font_01_sfnt_off0001f882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F882 12464 bytes
SHA-256: 53dd2b7346c56fe3adffbb1d0cd8ca37ee2d83f1626030e82fc79545c90768e7