Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d38dab1e1fe5a31…

MALICIOUS

PDF

72.9 KB Created: 2021-02-15 07:54:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: ba5ae3a459a579ec8fda00b1313ca459 SHA-1: 49b22a15d528b11e49d524f1a26919c8ed90067b SHA-256: 2d38dab1e1fe5a3133618142530f72798c16fff45872f743b8b17f72d4f5ad68
154 Risk Score

Malware Insights

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

The file is a PDF that contains a link disguised as a free study manual download. This link, 'https://crophysi.ru/123?utm_term=teas+v+study+manual+pdf+download+free', redirects to known malicious infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/123?utm_term=teas+v+study+manual+pdf+download+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384142/normal_5fd63afc1358d.pdfIn PDF document text
    • http://instapriz.site/sulufaginenpqawv.pdfIn PDF document text
    • http://discount50it.pro/davedenoxekigai4jvf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391605/normal_6028b0eb70dda.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/fuvidokibet/hiv_aids_positive_report.pdfIn PDF document text
    • https://s3.amazonaws.com/farokof/beneficial_noun_form.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/3._3_cell_organelles_study_guide_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/commando_2_movie_720p.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/2458115391.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/53893955462.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/78281481660.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/23781632487.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/airtel_live_tv_apk_uptodown.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/42076971497.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/hey_mama_mama_variya_song.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/karimnagar_district_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/making_inferences_worksheets_for_kindergarten.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_off0000dcd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD4 5388 bytes
SHA-256: cf0bf4ae7ff0a04fc5abd77c41f92103101b5b0d05ecb872086fff28dfb521e9
font_01_sfnt_off0000ef2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2F 11416 bytes
SHA-256: 424b1539fc02f09f175684ad7a6cf737d309c7baf069977ee08297d27eaac704

Open this report in the interactive analyzer, or submit your own file for analysis.