Malicious PDF — malware analysis report

Static analysis result for SHA-256 67d3e6fd29a1e035…

MALICIOUS

PDF

79.0 KB Created: 2021-03-16 09:24:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 2bc695f31cfd755d5b7e03e689669cc2 SHA-1: dc29487af91183200e782a8481f987f2a7967606 SHA-256: 67d3e6fd29a1e035b0c12f32e7ba111732cb560070aa0cec9be684ae1f4696f7
96 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'When i was puerto rican quizlet' and embeds a URL pointing to a malicious domain. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan. The presence of embedded URLs and the nature of the content strongly suggest a phishing attempt to redirect the user to a malicious site.

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://soxebez.ru/strik?utm_term=when+i+was+puerto+rican+quizlet PDF link annotation
    • http://mokenolovulonom.medianewsonline.com/14117051397.pdfIn PDF document text
    • http://vomimaforotagi.mywebcommunity.org/vudolerejenamanit.pdfIn PDF document text
    • http://pufivuziviv.mypressonline.com/jogonivakoleloguxeb.pdfIn PDF document text
    • https://cdn.sqhk.co/tapowifilez/hdihhaw/incantation_and_ritual_flute_sheet_music.pdfIn PDF document text
    • https://dafelubuvotaxid.weebly.com/uploads/1/3/4/7/134753950/da75939c.pdfIn PDF document text
    • http://dufigep.scienceontheweb.net/82215483548.pdfIn PDF document text
    • https://xisofapetuv.weebly.com/uploads/1/3/4/7/134747578/gejozog.pdfIn PDF document text
    • http://lilubaxubaxulu.sportsontheweb.net/colonial_comparison_chart.pdfIn PDF document text
    • https://lorivomewojesab.weebly.com/uploads/1/3/0/8/130813497/gazowegosikipivoz.pdfIn PDF document text
    • https://cdn.sqhk.co/toxodabatot/zifiaja/stickman_and_gun2_mod_apk_1._0_9.pdfIn PDF document text
    • http://luziniwanemek.sportsontheweb.net/ritogijeloveratonipazobuf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://920f4c01-5fd6-4c40-8b27-b99972fecb60.filesusr.com/ugd/d63aaf_e79cfc70ca6b4acb944e3b57cb70ff41.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/21408022328.pdfIn PDF document text
    • http://lugenizuridaj.atwebpages.com/vabenelerul.pdfIn PDF document text
    • http://dasobiviwadodaj.atwebpages.com/how_to_make_manual_pipe_bending_machine.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/50330489523.pdfIn PDF document text
    • https://d926c97b-7f3b-4ec8-a52a-318bcb589338.filesusr.com/ugd/120f26_9e42f87d9d1d4257b80aaa5c3dc971fd.pdf?index=trueIn PDF document text
    • https://945b3f91-9c76-4178-be32-f0dab3cfe2c6.filesusr.com/ugd/8d5d69_f3faf6b52dd547a19f31c326b3714f1d.pdf?index=trueIn PDF document text
    • http://jokosen.atwebpages.com/37056298583.pdfIn PDF document text
    • https://s3.amazonaws.com/bajuse/classroom_language_exercise.pdfIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/46297108502.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/uppercase_and_lowercase_worksheets.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_off0000f62b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF62B 5304 bytes
SHA-256: 5554fb0a83236c7306df9c6942bf44ffdb08c4fd728dfc46fc2a4c7241158d03
font_01_sfnt_off00010856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10856 11204 bytes
SHA-256: 505331d57de802ac80469670d536643486473c092cce7193e7a7622787d87a11

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