Malicious PDF — malware analysis report

Static analysis result for SHA-256 95c995ec060b0971…

MALICIOUS

PDF

85.5 KB Created: 2021-02-12 21:39:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e989334ac452d6ddc7a53bb411330b59 SHA-1: 174cdc25ca2cb6008f2975e47ec0f0bfe529cbc9 SHA-256: 95c995ec060b09710a4f78b32f7914a37a02b0ad1cc4bc67c82ddcaf4ae5d7d0
96 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of external URIs suggests the document is designed to redirect users to malicious sites or download further payloads. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://maypoin.ru/wix?keyword=electrochemistry+voltaic+cells+lab+report
    • https://cdn.sqhk.co/jofijoju/Kichbgf/wavepad_audio_editor_full_version_free_download.pdf
    • http://sport-stavki.fun/nosilosuferozudofibigidpwcrv.pdf
    • https://cdn-cms.f-static.net/uploads/4391903/normal_6015c537842af.pdf
    • http://arfesopt.com/screensaver_for_pc_windows_100u16t.pdf
    • https://cdn-cms.f-static.net/uploads/4386081/normal_5fdbd10ed77ab.pdf
    • https://cdn.sqhk.co/silutoge/gjigahe/pacific_time_abbreviation.pdf
    • https://static.s123-cdn-static.com/uploads/4476590/normal_5ff2bd4fd8a47.pdf
    • https://static.s123-cdn-static.com/uploads/4501645/normal_5fdeb45cd6af7.pdf
    • https://cdn.sqhk.co/nefowumik/X0RwmQ4/52565075736.pdf
    • http://7gusevshop.space/chillar_party_movie_in_hd5o3pl.pdf
    • http://academic-club.ru/english_activity_worksheets_for_grade_4xuvtd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/tobojelusiwi/skull_and_crossbones_pill_report.pdf
    • http://nidawijonag.rf.gd/thesis_proposal_presentation_template.pdf
    • https://s3.amazonaws.com/mexavofezoxi/dictionary_spanish_to_english.pdf
    • http://vemesivudaro.epizy.com/84027106092.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec82.bin
3ab960b561bdd507a8675fd74241f3b1d7e26d4c211e8a7ebeb351a3c2bdf1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC82 5116 bytes
font_01_sfnt_off0000fde9.bin
01ee70152cbe241df8d7c77dfd01caca3bc93c3d7370a7e4855f539f18b19578
pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE9 11896 bytes
font_02_sfnt_off00012547.bin
d9b012042df5fe8dc074c42eae0f7627b15178249d85eb70dc7afc452d134ec7
pdf-font-stream PDF embedded font (sfnt) at offset 0x12547 16132 bytes
font_03_sfnt_off00013a3e.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x13A3E 4324 bytes