Malicious PDF — malware analysis report

Static analysis result for SHA-256 4484bd4fad79f76f…

MALICIOUS

PDF

74.8 KB Created: 2020-12-16 02:23:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 5ce8c5da433027a2f48447bf5189afa5 SHA-1: df1ea9ae4455d60f642d3c760229ead03394eb9d SHA-256: 4484bd4fad79f76f42c266ad217c9b79f782d566d2f68c339442893ada8c0431
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The presence of an embedded URI pointing to 'traffset.ru' suggests the document is designed to redirect users to a potentially harmful site. While no scripts were explicitly extracted, the PDF structure and the ML classification strongly suggest it's used as a lure for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/aws?utm_term=present+simple+forma+negativa+ejemplos PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403952/normal_5f965d9d55ee3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371244/normal_5f9eb61cc82b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373505/normal_5fac28446e54a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403421/normal_5f9289feef912.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472753/normal_5fd18229ea0e9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc6b7cb579eee3ae068beec/t/5fccf9d95d2e6f3bda3f09f3/1607268826363/86451997360.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf566ffa04221c7117598c/1606375024133/97641519180.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/limarubibex.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc784a563393450185475e5/t/5fcc75a4978da30c56f6365a/1607234981482/dobomutopu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80557088-2183-4d4d-805d-24bc4852d833/keepvid_video_downloader_for_windows_7.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7904a778af068263f36d1/t/5fd1869eebc7ce75e8aa7b2b/1607567007613/8455670108.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e80068612547ed5e2b99/t/5fca91308e83f251611693b0/1607110960490/recargar_telcel_con_tarjeta_de_debito.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD83 5360 bytes
SHA-256: 75d0f30509f938531ef2bcd7ad17c7da0760e391576a227a016f5e2c672e2d2a
font_01_sfnt_off0000efaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAA 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off0000f838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF838 11516 bytes
SHA-256: c30e4686d2a51e76e44cba2149882587fca2b895e16863e242baa9bede9d9636

Open this report in the interactive analyzer, or submit your own file for analysis.