Malicious PDF — malware analysis report

Static analysis result for SHA-256 e025c4872fc69fe6…

MALICIOUS

PDF

69.3 KB Created: 2021-02-18 22:54:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: d875b1acc016cf1be152377e4644a893 SHA-1: d5268380ee86e379e8d87873247c640537b0bad8 SHA-256: e025c4872fc69fe6830f08681d2c9fc6b09de8b6ea8937d8c6fea9863255ec0f
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that, when clicked, leads to a malicious domain. The document body, though heavily obfuscated, appears to be a lure related to technical information. ClamAV and ML classifiers strongly indicate maliciousness, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/strik?utm_term=how+to+wire+a+usb+port+for+power PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366011/normal_6004a96e18112.pdfIn PDF document text
    • http://suzaxikuzexaw.66ghz.com/akshara_bidaai_song.pdfIn PDF document text
    • https://cdn.sqhk.co/zaviresodew/jggdjal/41215958271.pdfIn PDF document text
    • http://nunokitatamipo.22web.org/malheur_county_arrest_report.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488330/normal_6027844850699.pdfIn PDF document text
    • http://dadefuxafovub.22web.org/budget_planner_free_template.pdfIn PDF document text
    • https://cdn.sqhk.co/vedanoderifu/iigDibj/gugebedelatenenenored.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365586/normal_5fe8806031fdf.pdfIn PDF document text
    • https://cdn.sqhk.co/nibubovixif/aEZmGGY/jagikaminopimobuwigeguw.pdfIn PDF document text
    • http://xipevufizokev.iblogger.org/26159830171.pdfIn PDF document text
    • http://tapabafana.22web.org/ralinegopetekonuf.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/nefunupu/20762309260.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/hollywood_adventure_movie_filmyzilla.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/chairperson_s_report_sectional_title.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/wesilakisikoto.pdfIn PDF document text
    • http://kizebemifovexe.rf.gd/63718127890.pdfIn PDF document text
    • http://jarebavax.epizy.com/81192431990.pdfIn PDF document text
    • http://bawesokiri.epizy.com/montgomery_ward_sewing_machine_model_1957.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_off0000d407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD407 5056 bytes
SHA-256: 527aa51012a041b9febfe8723bea776cbb822f609f87d4c5f0121ef8948c6a40
font_01_sfnt_off0000e552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE552 10204 bytes
SHA-256: 23c49b49a44b44b6233c47eeb84aace6be0e830f36d9004d64745f991bd4ba4a

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