Malicious PDF — malware analysis report

Static analysis result for SHA-256 6db71dccfc4f3223…

MALICIOUS

PDF

73.3 KB Created: 2020-12-02 17:39:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 4d64a1438eb4deea027ec0f0e6edd3bb SHA-1: d9f17c1513987818041d7e97369d80ca906efa4e SHA-256: 6db71dccfc4f3223967a61f7b0aa6e82250cd87b28166648b47d9971e448c784
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 0.9997

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://trafficel.ru/123?utm_term=there%2527s+nothing+out+there PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459794/normal_5fc03473aca1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462350/normal_5fc172d00dc47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383929/normal_5f96775ee0320.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420238/normal_5fa5a4bd52a7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369647/normal_5f94ceb6c6c84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369760/normal_5f8f5ee92c9b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467038/normal_5fa938cc31c22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378608/normal_5fbed62ad1b01.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0dd9b8ef7301f8b108504/t/5fc26a3e2dd96f59183cb047/1606576703296/kotifavuzazaxajerunemu.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/kimuwirujutipuvakateniv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f804370-e8d1-4a49-b153-9bea1c12e964/butamogar.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/dragon_s_dogma_assassin_leveling_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/date_sheet_pu_patiala.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/demawamuzewesojaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cda56fa3-5213-4145-9b3a-a817b765a20d/devisirukizijupoxotudejon.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_off0000e29a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE29A 4688 bytes
SHA-256: 9b1f213fe3e24e4df33dfbd502c117dec9619727b8dc2b217fc6fcde478f50ff
font_01_sfnt_off0000f28f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28F 11092 bytes
SHA-256: f5eb661303bba88b9ea86ba43084de3848883fc83e39d5910b8fc01a70fbfc97

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