Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d2516741165321f…

MALICIOUS

PDF

85.8 KB Created: 2021-02-25 07:26:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 8a0e95b96fd3c9a965715c6bacf2901f SHA-1: 069aee2805ded8dca8f8dbf76fce31cb46ee0add SHA-256: 3d2516741165321fd26f568d14ae0b66b4c19a54f75a03690a43c693d698e013
96 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with the primary one appearing to be a lure for educational content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing or malware-hosting sites. No scripts were extracted, but the presence of numerous suspicious URLs suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://jacksth.ru/wix?keyword=scott+foresman+mathematics+grade+5+homework+workbook+answer+key+pdf PDF link annotation
    • http://dreabling.online/filtrete_3m22_thermostat_manuals2y6u.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410679/normal_5fff4fb68757b.pdfIn PDF document text
    • http://moviesaddaa.online/how_to_insert_poll_everywhere_into_powerpoint_mac35y57.pdfIn PDF document text
    • http://love-your-lips.online/55247545172wf0n8.pdfIn PDF document text
    • https://movulejovem.weebly.com/uploads/1/3/4/4/134470355/dasajijilezagabuw.pdfIn PDF document text
    • http://auth02mobility.com/29661131860rk88z.pdfIn PDF document text
    • http://kkkirrreeee.space/70234673517bbpmm.pdfIn PDF document text
    • http://topvideo.design/177401390604t8cc.pdfIn PDF document text
    • https://wafumaxa.weebly.com/uploads/1/3/5/4/135400811/8048829.pdfIn PDF document text
    • http://trokot-online.xyz/4500868705694fhl.pdfIn PDF document text
    • http://mumolazesinidix.getenjoyment.net/periodic_table_worksheet_answers_define_a_family.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369796/normal_6018f4aecd6aa.pdfIn PDF document text
    • http://tulavesew.getenjoyment.net/operations_management_heizer_chapter_10_ppt.pdfIn PDF document text
    • http://keepxufi.space/fiction_book_report_template_3rd_gradebsipo.pdfIn PDF document text
    • https://monowulesamewul.weebly.com/uploads/1/3/2/6/132682048/solodifopepoko_boxuk_gudomufapo_kidasibuzupomij.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rususekobijo.myartsonline.com/8109601691.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/49220957060.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/66094904494.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/kakesikewik.pdfIn PDF document text
    • http://wutejaxevewef.myartsonline.com/mipizobigaxomipeduveki.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/pixewumup.pdfIn PDF document text
    • https://s3.amazonaws.com/lemerisinivum/witcher_3_a_feast_for_crows_location.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_off0001064c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1064C 6160 bytes
SHA-256: 57a73c0457bb18a849b3b1e902906200d07de4ac4eb790c44fb2073d3d2c3909
font_01_sfnt_off00011b2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B2B 1800 bytes
SHA-256: 6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee
font_02_sfnt_off000123bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123BB 10780 bytes
SHA-256: f3ab7bddb725eb7f8e9cc97880a799a9dea0a993e5b9012258770858060d0e4c

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