Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce501d8c6b840506…

MALICIOUS

PDF

74.2 KB Created: 2021-02-23 02:25:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 49a88497669918dfc7cc7d933202df60 SHA-1: 9c3f23013d266e38e0f6f86a148ed7131affc78c SHA-256: ce501d8c6b840506f2a1278515f6d6d9c9d2a706201dc13216c773c56cfd8f09
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that leads to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with phishing or malware distribution. The document body, though heavily obfuscated, contains text related to search queries, reinforcing the lure aspect.

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://baarspo.ru/strik?utm_term=how+long+to+cook+a+prime+rib+on+rotisserie PDF link annotation
    • https://gafeziluwer.weebly.com/uploads/1/3/4/3/134310472/edc66.pdfIn PDF document text
    • https://vinipuzi.weebly.com/uploads/1/3/0/7/130776781/34097acbdf.pdfIn PDF document text
    • https://cdn.sqhk.co/zuvezunotumu/ifhehjT/battleground_survival_battle_royale_apk_obb.pdfIn PDF document text
    • https://cdn.sqhk.co/mujawiru/fjg5Zaq/35996242527.pdfIn PDF document text
    • https://cdn.sqhk.co/nudogada/Mibjjy8/sudoku_easy_printable_4x4.pdfIn PDF document text
    • https://cdn.sqhk.co/kinemefuwa/hajb7ha/youth_rewards_cash_apple_card.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/xuvamuba/command_prompt_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/21017795085.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/29950113367.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/certificado_de_origen_mexico_japon.pdfIn PDF document text
    • http://wiwekunu.rf.gd/99510862357.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/papyrus_truetype_font.pdfIn PDF document text
    • http://wiwifiladovov.epizy.com/63126489843.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/expanded_notation_worksheets_grade_3.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_off0000e557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE557 5508 bytes
SHA-256: e931685ad075621f6cc7412171254fb4eb2449814f61b5d11266c1e3f052e519
font_01_sfnt_off0000f813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF813 10580 bytes
SHA-256: e23087394cd5845b286abb2f1b9914cd0390b5ba2d95452f4128b01c971d004b