Malicious PDF — malware analysis report

Static analysis result for SHA-256 f12751703f274dbc…

MALICIOUS

PDF

63.4 KB Created: 2020-11-11 17:56:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ed5734bc3a8882b13158404dbbf0a5f8 SHA-1: 1e8e09757225609e00a32fd63d2f1142d144e400 SHA-256: f12751703f274dbcc5c704deb6b7db145027bdc611e9d6d2f1f8e71e6bedf329
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 0.9997

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://traffnew.ru/aws?utm_term=free++chrisye+cintaku PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369912/normal_5f87e599b987b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384469/normal_5f91a8fca0073.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450241/normal_5fa66205a2dfe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370542/normal_5f8927d4d43d7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/3b83236b-54c0-432e-8bf8-2bde6433c79d/31254643534.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea98b424-97b0-4c9e-87ce-8341cc97f37c/24260178449.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/tipewabobori.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/town_of_tuxedo_ny_taxes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72c1b7a0-b9b1-4c66-8375-db03a08360e4/sword_art_online_sachi.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/wogipunidagofagirika.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/sodivuzu.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_off0000ae73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE73 4748 bytes
SHA-256: 53fa0a8c6234dcc70da66a6c7290d34b5ff6ad1af3e2c90abe122f43f54df5ac
font_01_sfnt_off0000be8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE8B 10820 bytes
SHA-256: f2408b1ac1fc6ecf809833cc9cc2825eb87a7322175f594be849c137a0de986d
font_02_sfnt_off0000e317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE317 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333