Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4772544c13e6bc8…

MALICIOUS

PDF

76.9 KB Created: 2021-02-26 01:39:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 5d2e4d67655dffe64418a5324dcdb8e9 SHA-1: f8c20923c24a12f768355e64665781599437d154 SHA-256: e4772544c13e6bc82a49ab49f2c9138be8dc75f64cfb42245ea1b9f90ad3792f
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to exploit user interaction via a malicious link.

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://jottigo.ru/wix?keyword=personajes+del+cartel+de+los+sapos PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4428335/normal_60083fd89fa2b.pdfIn PDF document text
    • http://onlinekartiadesi.com/vande_mataram_lyrics_in_tamilu0ocz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418175/normal_5fda81f896a7f.pdfIn PDF document text
    • http://leafester.online/vomipelalasebivokugejig8unb1.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/fosagobomap/57753491461.pdfIn PDF document text
    • http://jisiwolug.rf.gd/mirro_pressure_canner_parts_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/baker_612_chipper_shredder_manual.pdfIn PDF document text
    • http://varepekolati.rf.gd/adding_text_to_free.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/timimes.pdfIn PDF document text
    • http://kosuvoz.epizy.com/zupabunuwi.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/botatakubosa.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/vojivu.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/46030438363.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/83575496381.pdfIn PDF document text
    • http://vagakidid.epizy.com/how_to_play_dd_5th_edition.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_off0000ede1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE1 5144 bytes
SHA-256: 56d83e6e8d7c537236a01ae7f44ccf3148ee00a180bbe2d8960f194c55f2b020
font_01_sfnt_off0000ff70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF70 11628 bytes
SHA-256: b9c3c777ef8b6ae28590fe2d94b1ee454baf77593eb66966cf6a6f46ec4d4ec4

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