Malicious PDF — malware analysis report

Static analysis result for SHA-256 09d0ca570c9b51d3…

MALICIOUS

PDF

105.0 KB Created: 2021-02-12 06:40:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 30165533ad6b29a393b22a49f128fb64 SHA-1: 8c8c559db169074eed953e678a4ed5c7a642f08e SHA-256: 09d0ca570c9b51d3e653d91d7e76b760f6cd0fe592c51ec4c1adbac62b6c4a3f
154 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics, including a critical finding for a PDF redirector link to 'https://yafferge.ru/wb?keyword=release%20management%20process%20template'. The ML classifier also flagged it with high confidence. While no scripts were explicitly extracted, the presence of malicious redirector links strongly suggests an attempt to lure users to malicious sites, likely for phishing or to download further malware. The document body appears to be corrupted or heavily obfuscated, preventing a more detailed analysis of its content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/wb?keyword=release%20management%20process%20template In PDF document text
    • http://vanlit.ru/73605228233dduxz.pdfIn PDF document text
    • https://cdn.sqhk.co/giganopof/hhijhii/zerinarodujawoxe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454995/normal_5fd1f31c1d5c9.pdfIn PDF document text
    • https://cdn.sqhk.co/wefonasifaza/fDH3CWI/6250752229.pdfIn PDF document text
    • http://shoes-storie.club/1433591575b06uf.pdfIn PDF document text
    • http://fimewot.xyz/dell_mih61r_mb_manual1ekpp.pdfIn PDF document text
    • http://vquest.website/wixipexovawusadovaaotrb.pdfIn PDF document text
    • http://eduha.online/the_worst_witch_season_2_episode_1wugpd.pdfIn PDF document text
    • http://best-store.club/kilulusekuwunij2jmn.pdfIn PDF document text
    • http://winoraama.fun/charlie_brown_song_piano_sheet_music254p0.pdfIn PDF document text
    • https://cdn.sqhk.co/xezexasag/Xoih0jb/zebibafoferove.pdfIn PDF document text
    • http://hookup757.fun/acknowledgement_for_project_report_mbau2ejf.pdfIn PDF document text
    • http://navalny.design/gososujevowodavaxexijtru8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470405/normal_5fc97a50b747d.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/girilifawuxi/42185046716.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/alternative_guide_to_cartagena.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/chatting_application_in_android_studio.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/how_to_check_bitmap_size_in_android.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_off00015fc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15FC4 5260 bytes
SHA-256: 66d7be7c1ce3a81c223a0b500b12cc4cd9b485c3d3a99b8ffce58d1d743f14df
font_01_sfnt_off00017195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17195 10840 bytes
SHA-256: e1989d692ac4005f46b1af979488875d7e7d9cfcbcf0caeea9906acdd580f30a

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