Malicious PDF — malware analysis report

Static analysis result for SHA-256 d24dc83a21f9c189…

MALICIOUS

PDF

80.6 KB Created: 2021-04-25 17:15:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a98cf903e9cd9e1a95ad582042d4be2e SHA-1: 92e7abd595bb10b7ea48f0ced6660191ee549143 SHA-256: d24dc83a21f9c189f95090a5a6304aaf6a476eac663c577c888507f8a5a36bbe
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://zajinet.ru/strik?utm_term=what+to+eat+when+doing+an+elimination+diet PDF link annotation
    • http://tiloxoro.iblogger.org/a_room_with_a_view_free_download.pdfIn PDF document text
    • http://gegetamuwu.iblogger.org/bariatric_diet_plan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4941700-2e92-461b-b59f-3a848c143667/tonudorufetagedit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57e12ef9-8037-4a6b-976f-85293c4f453e/how_to_program_a_gate_remote_centurion_d5_evo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2cea4cf-9695-47d5-8836-88c75c6ec944/how_did_you_achieve_your_sales_targets_interview_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/c_street_surf_report_magic_seaweed.pdfIn PDF document text
    • http://redotikami.rf.gd/sozajuxuriguxar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6667650-b5b4-426f-8848-40fc693a7094/46224473689.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/conclusion_sobre_titulos_de_credito.pdfIn PDF document text
    • http://runezejukasik.epizy.com/54628809363.pdfIn PDF document text
    • http://poruworetizilu.epizy.com/cellule_vegetale_cours.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76c4e775-003a-47dd-93fc-2d0f03885fe1/mini_mental_status_exam_in_spanish.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4854284a-acab-40d2-b63b-8b71e83fcc7a/74746489494.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bd4d83e-bf78-4786-a63c-9cc57918e0d8/k120_keyboard_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/endymion_deck_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/xaxamexuzuvevelenomoga.pdfIn PDF document text
    • http://xijovapafibowuw.rf.gd/wuvokujatimipo.pdfIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/vigovudomuxuse.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/what_is_the_rarest_personality_type_intj.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/aladdin_2019_ost_free.pdfIn PDF document text
    • http://tesitanine.rf.gd/sony_ps4_emulator_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/8266153170.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_off0000ff66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF66 5068 bytes
SHA-256: 5bba2b803547e1dcc0d944fe05334e42cd2431ebbc7d4f1907960620ca2ca124
font_01_sfnt_off00011099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11099 10680 bytes
SHA-256: c6a4bcc332b526125f56b6f9b2968a5af290013b8a772c11f9a74d0ee39c284f

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