Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf84dcc8a2e467e1…

MALICIOUS

PDF

81.2 KB Created: 2021-04-02 14:19:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 4c7fd04968a5d179502087591736f885 SHA-1: 572d59dda974825920c83e1bd2dc359ce704499d SHA-256: bf84dcc8a2e467e1bdfdce8205255f2beb43c91e1f978e8d7064e958073e700e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://kuzutuzo.ru/wix?keyword=root+takahira+agreement+1908+apush PDF link annotation
    • https://cdn.sqhk.co/bojojiweg/heywijg/bawat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456984/normal_6017891315045.pdfIn PDF document text
    • http://saniwofixapu.mygamesonline.org/brian_tracy_maximum_achievement_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480591/normal_6009950d1cb3a.pdfIn PDF document text
    • https://cdn.sqhk.co/meradipuwiz/tjcPSUO/89253923574.pdfIn PDF document text
    • http://tarekupi.scienceontheweb.net/85295943672.pdfIn PDF document text
    • https://cdn.sqhk.co/xinosemu/Dhijagg/kipusirezowo.pdfIn PDF document text
    • http://jivusibofonefud.mygamesonline.org/a_knight_s_tale_script.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459470/normal_60623a65aaa08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414164/normal_602cfdc34403b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407313/normal_603057c0146b7.pdfIn PDF document text
    • https://cdn.sqhk.co/xuvuxemoguf/ahehfhb/44143719859.pdfIn PDF document text
    • https://cdn.sqhk.co/zupololano/AH7Bogi/vofikapubigapepogomanu.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/sobaketemu/around_the_world_in_eighty_days_chapter_11_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/the_anatomist_s_wife.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/togoxewisa.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/personal_pronouns_sentences_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/achtung_die_kurve_dos.pdfIn PDF document text
    • https://s3.amazonaws.com/nitirew/vowaluwazetobekerozoz.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/59538436806.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/top_notch_fundamentals_teachers_book.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_off0000edfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDFE 4308 bytes
SHA-256: 41ec9e99cfac63eba232c4263b369d8e3112bd13e9cd32607e0ef92e31cbcaac
font_01_sfnt_off0000fd1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD1A 5816 bytes
SHA-256: 0164d7936465740981d9a32540bb93916f5abf4250f941e1b55a707d0d2bb81d
font_02_sfnt_off000110c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110C7 11060 bytes
SHA-256: 9b3576e3d2b55d0e717de4b9c7f12f2a370404cefbc9c818a8de5de25f3a4760

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