Malicious PDF — malware analysis report

Static analysis result for SHA-256 942e91667a943c88…

MALICIOUS

PDF

78.3 KB Created: 2021-03-18 07:16:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: ef7d2456bc438980ed0ff7d1400b7134 SHA-1: d3d91b35359b8ef5b8bd657053a07b00e13d63ab SHA-256: 942e91667a943c882cd9d77da7ad3fa066d330a7930c8a05947a088609070c0c
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains references to 'hacked game apks' and the embedded URI points to a URL that also contains 'hacked game apks' in its query string, suggesting a phishing or malware distribution lure. The presence of embedded URLs and the nature of the content strongly suggest a phishing attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/wix?keyword=hacked+game+apks PDF link annotation
    • http://usechambre.xyz/27890319380idwrg.pdfIn PDF document text
    • http://mixed-rootwork.com/synthes_antegrade_femoral_nail_technique_guidexwrbx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zerepuzuze/97640171436.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/lantern_vpn_pro_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dc515b0-4805-4eac-8637-526f09c1ac1c/fekaredivotasafopagafusaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcb511f5-8753-4762-b635-ba8a642c390d/20928498870.pdfIn PDF document text
    • http://muxomak.epizy.com/past_simple_and_continuous_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/677138b8-4b7d-4555-b0b6-212cc0f00b64/how_to_use_mophie_charging_case_iphone_11.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwuzerijofa/red_harvest_audiobook_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/face_authentication_aadhaar.pdfIn PDF document text
    • http://denisilexi.rf.gd/alfonsina_y_el_mar_dyens.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f813f655-9e35-43cb-9b86-cb23125b9c96/derinamimow.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/96926608377.pdfIn PDF document text
    • http://lizaduguxo.epizy.com/dengue_hemorrhagic_fever_who_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/jelekudezivarepawuzesemif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4b72376-714c-4f22-80b6-460f5c92ad24/ar-15_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/17623768502.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/75649030823.pdfIn PDF document text
    • http://zewupubo.rf.gd/73129824191.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/jeduwigabujuvagunetin.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE820 4736 bytes
SHA-256: 73420d7ada3c49ed0acf2c04218a36b578e61b37a30c813316441d69ff1b5c93
font_01_sfnt_off0000f82f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF82F 10604 bytes
SHA-256: 9971c6c852db30a3af11d82fc5bf7a74ac1de918068de926a02c34c28e177035
font_02_sfnt_off00011c7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C7B 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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