Malicious PDF — malware analysis report

Static analysis result for SHA-256 e25fea34d3fec378…

MALICIOUS

PDF

58.9 KB Created: 2020-12-16 01:40:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f029ccffd84e23c1b688ce9050b08a2f SHA-1: 2498d16040088ddafffd8ec699ca74709664d1f4 SHA-256: e25fea34d3fec3789c823ed58125f5abf18c970d4c1c5af537f4d287d304d1de
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'trafftec.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains text related to 'Transformers optimus prime studio series 5' and the authoring application, suggesting a lure to a malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafftec.ru/aws?utm_term=transformers+optimus+prime+studio+series+5 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370071/normal_5f8a014db9d1b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374979/normal_5fc7503e78a66.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/visagogijulep/live_sports_stream_tv_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/chemistry_unit_6_worksheet_1_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bad3f9e4-7ec1-4e96-b966-a5e05cab1c7b/proyecto_del_barrio.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5197abd14ff0dd2b7be46/t/5fc7c274b7521d608a52836d/1606926964764/lofezesojitunemonogenetel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffeffe9e-17cf-41fc-9c40-da892d25a695/69328912290.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01053a03-df3b-450a-aed9-9b2835d3a630/57536947643.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/download_common_sense_j_hus_album_zip_file.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/android_emulator_bluestacks_4.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcee2c3ca23154c959f80f/1606217262054/android_sdk_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32d1a54a-a1ca-4100-bfaf-d0e99516805d/nolidinapokekitejuka.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/inverter_allen_bradley_1336_plus_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43416ae2-3f54-4774-8e04-9cd1b5b18be3/82747836256.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/jemanatof.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_off0000ada1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADA1 5228 bytes
SHA-256: 552681460f75d39ec571910152d15203cc634db625ebf7ece71020e532986ba5
font_01_sfnt_off0000bf53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF53 9172 bytes
SHA-256: 15ddbababf32038cadd9be0d78d63ca912d8171a3fd5327f78b0837cd5d98ae2

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