Malicious PDF — malware analysis report

Static analysis result for SHA-256 360e718a43c9dcc5…

MALICIOUS

PDF

73.6 KB Created: 2021-02-27 00:46:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 0187d04d33776461a1bebf390beb32b7 SHA-1: 54080eab32db4318555bec77d3c2d73ad82513b7 SHA-256: 360e718a43c9dcc55e596cc4098e4bd5190f66532577a89078d3f82629e49b32
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL disguised as a search result for a book. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The PDF_URI heuristic points to a URL that appears to be part of a phishing lure, and the presence of multiple unknown reputation URLs suggests further malicious infrastructure. No scripts were extracted, but the overall structure and heuristics point to a malicious document designed to trick users into downloading further malicious content.

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://xajibur.ru/wix?keyword=surviving+hitler+book+pdf PDF link annotation
    • http://ronitojaxebibo.22web.org/31098897181.pdfIn PDF document text
    • http://igrarazuma.info/nipaxebajikujq2kp.pdfIn PDF document text
    • http://lasinonid.iblogger.org/pisadokutitotezolo.pdfIn PDF document text
    • http://zathkatow.xyz/fixewezenr697.pdfIn PDF document text
    • https://cdn.sqhk.co/jawuraxexije/fFjaium/kisujimubupi.pdfIn PDF document text
    • http://ru-1.casa/durimojilizigwthne.pdfIn PDF document text
    • http://nutepos.iblogger.org/waluxaxubawevizozipa.pdfIn PDF document text
    • https://cdn.sqhk.co/loziromegon/KCQgirK/50594158028.pdfIn PDF document text
    • http://mixit.info/dufezogedojugasigifufijzx.pdfIn PDF document text
    • http://xenogejewaruvi.22web.org/68216747814.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/lemerisinivum/pidet.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/kakulexeb.pdfIn PDF document text
    • http://mukanebesiva.atwebpages.com/37681101748.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/go_math_3rd_grade_practice_book_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/the_scorch_trials_chapter_5_summary.pdfIn PDF document text
    • http://ratazudawi.epizy.com/uniformly_accelerated_motion_velocity_time_graph.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_off0000e436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE436 5284 bytes
SHA-256: 4c6a1c5212a7277ac8d0ebf593f3476c2a44b8e5a88a7a3223b5926e57e062a2
font_01_sfnt_off0000f630.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF630 10244 bytes
SHA-256: d3ff2ca1ed772920c6324286728c2e73e866235da30089505e9f4538a9a211e5