Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bcaf487c5ddab2f…

MALICIOUS

PDF

80.6 KB Created: 2021-03-27 14:33:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5fbda29b2e60a26d5895bc5164260b53 SHA-1: 46a7560ba904a4ff849281915cff7b5ac92f89bf SHA-256: 5bcaf487c5ddab2fbdb3aad668d46caa203e269159728d726753c50fa857df30
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains a lure related to 'your organisation requires windows hello office 365', directing the user to a malicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or credential harvesting. No scripts were extracted, but the embedded URI is the primary indicator of compromise.

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://seumenha.ru/wix?keyword=your+organisation+requires+windows+hello+office+365 PDF link annotation
    • https://zuwukozoxuwiged.weebly.com/uploads/1/3/4/7/134713444/xeganeno_melotuvo.pdfIn PDF document text
    • https://cdn.sqhk.co/ramawuvade/jbBDhdk/shoot_em_up_full_movie_youtube.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369783/normal_60550fe01855f.pdfIn PDF document text
    • https://cdn.sqhk.co/nizufalagef/Ljajdgj/111_raft_island_drive_northwest_gig_harbor_wa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418587/normal_5fdd78eb22f79.pdfIn PDF document text
    • https://sujepofuk.weebly.com/uploads/1/3/0/7/130775011/9038108.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391327/normal_6023b52f6f306.pdfIn PDF document text
    • https://cdn.sqhk.co/masamiwe/ohbhdHT/high_heel_cupcake_ideas.pdfIn PDF document text
    • https://cdn.sqhk.co/jurugaguvedu/jLml4ig/business_analysis_example_report.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/jehgiek/98795867002.pdfIn PDF document text
    • https://nukofagola.weebly.com/uploads/1/3/4/8/134883999/demimonesowejo.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/toliwudalamem/free_bejeweled_3_game_online_no.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/what_is_meaning_of_make_up_in_malayalam.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/xoguxo.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/jeponaxuxejizagepifor.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/jebajebikine.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/durigigovofakif.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/14223560074.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_off0000ebfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFE 5904 bytes
SHA-256: 67a6da03b9ec3645606c8429727a00a319868c25ef50aae7333456a4b496eba7
font_01_sfnt_off00010018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10018 2508 bytes
SHA-256: 879e1128e7b0ce14a540de1b204ffaef3716f6dc6b1f6c9f936332642c31aa3b
font_02_sfnt_off00010afb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AFB 11672 bytes
SHA-256: e8ce0397c02e018f11564cdad7175b9ee85aa157b67a9b4334c641ca95de8b66

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