Malicious PDF — malware analysis report

Static analysis result for SHA-256 558cb42dc98293e2…

MALICIOUS

PDF

70.6 KB Created: 2021-02-14 00:05:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 755768bac7b788e342ba7a1f678120e3 SHA-1: f5e4f4775fcbd7b8f3a327a36c6aef0852d42735 SHA-256: 558cb42dc98293e2f21a6bfc34e42216c565bcd7237fe38e9b722c2c2bac5839
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 0.9998

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://druttle.ru/wix?keyword=little+nine+conference PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4463034/normal_5fd37ae2c71e6.pdfIn PDF document text
    • https://cdn.sqhk.co/vufisolepu/jbigX6L/67683186841.pdfIn PDF document text
    • https://cdn.sqhk.co/tevitogaperu/jjUieid/downloader_for_instagram_pro_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/tifapoxur/YEigcvD/5866220036.pdfIn PDF document text
    • https://cdn.sqhk.co/jowapezo/DihKNXV/84622407049.pdfIn PDF document text
    • https://cdn.sqhk.co/nejajevafode/VCjdgi5/remaved.pdfIn PDF document text
    • https://cdn.sqhk.co/wetoxojixan/igigKu6/mod_mutant_creatures_1._8._9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453327/normal_6004ec3ba9aa0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495413/normal_600c57502ee77.pdfIn PDF document text
    • https://cdn.sqhk.co/jefapukawore/imjcgai/catfishing_meaning_slang.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372384/normal_6021ef8011eed.pdfIn PDF document text
    • https://cdn.sqhk.co/xenivoronizu/jahboy8/bilomerabopum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495385/normal_5fd6a3550a450.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416664/normal_5ff65ba696bd8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://watijosanowo.epizy.com/bebo_alfaaz_video_song.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_off0000db28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB28 4428 bytes
SHA-256: a152f31aa85da26a814e81411bb34c7e2ecab842113d72f0b30fc155a7570b6a
font_01_sfnt_off0000ea4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA4B 10312 bytes
SHA-256: 189f6d5bde67b2bc1081f8c4c56048cb40c58b252c6627dcc7082619f11f7350