Malicious PDF — malware analysis report

Static analysis result for SHA-256 37a0efd6a04995cc…

MALICIOUS

PDF

89.5 KB Created: 2021-03-20 15:41:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 948171234674e4ab8c85b6a75030c060 SHA-1: 2069202066903b705d99e704864a016cfdf16579 SHA-256: 37a0efd6a04995cc27a8ccb1755bda7ae3d7afaa59e28b04f1dc8d467aafe1c2
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, disguised as a search result for a benign document. ClamAV and ML classifiers strongly indicate maliciousness, classifying it as a phishing trojan. While no scripts were directly extracted, the presence of an external URI suggests the document is designed to redirect the user to a malicious resource, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gimoguvi.ru/award?keyword=car+seat+canopy+pattern+pdf PDF link annotation
    • http://kenugizi.getenjoyment.net/bugsy_malone_song_lyrics.pdfIn PDF document text
    • http://fawikenaxalu.scienceontheweb.net/lavibefosu.pdfIn PDF document text
    • http://kegitolufisiwa.iblogger.org/13069123384.pdfIn PDF document text
    • http://mirinodok.iblogger.org/kroq_top_500_songs_of_all_time_2017.pdfIn PDF document text
    • http://kutegexuwudaro.getenjoyment.net/59667371832.pdfIn PDF document text
    • http://ralugugifoxatir.scienceontheweb.net/english_for_auto_mechanics.pdfIn PDF document text
    • http://fawikenaxalu.scienceontheweb.net/english_conversation_practice_grant_taylor_free_download.pdfIn PDF document text
    • http://kelimap.mywebcommunity.org/38198025444.pdfIn PDF document text
    • http://vodizurulenega.mypressonline.com/100_weight_loss_tips.pdfIn PDF document text
    • http://xodaxedepapopox.mygamesonline.org/how_to_prepare_projected_income_statement_and_balance_sheet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nukilaba.myartsonline.com/27340995914.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/employee_non_disclosure_agreement_template_free.pdfIn PDF document text
    • http://jejogekatexun.epizy.com/amman_alaippu_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0e5e427-fa51-4180-a4b7-43d07b8b9105/gidisemilo.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/sunodakudetodam.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/zonodax.pdfIn PDF document text
    • http://tediguku.atwebpages.com/9615475056.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f799e1c-99db-4641-ad84-8bb8c9faf226/microsoft_excel_chart_templates_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fef2c40-5a68-4ae9-8ef8-89273db3693b/99271179307.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/83120302309.pdfIn PDF document text
    • http://sogivuwe.onlinewebshop.net/the_golden_goblet_chapter_1.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_off00012113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12113 5124 bytes
SHA-256: d1a685fea034dcab18de4c49c639c5d532afc6b86b33c3c995d497149515696b
font_01_sfnt_off0001329a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1329A 11248 bytes
SHA-256: 4a8e7034d366aea82a57e53ecf2e8264854e2d5332cefd15aa76bfd675633b19

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