Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6a378c0ca11f0a5…

MALICIOUS

PDF

85.5 KB Created: 2021-04-30 18:41:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f303118f85db2512b03454cd41e34973 SHA-1: 6b9f36f8669fc0911718bf83c0016d9323e8c065 SHA-256: b6a378c0ca11f0a5f35097901f92ad6f5e2c6eaf8eb391e4fb7816e560668c06
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 0.9998

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
  • 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://jottigo.ru/strik?utm_term=best+online+workouts+for+seniors PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4503033/normal_60323d5c30689.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471475/normal_5fddbcc4d2889.pdfIn PDF document text
    • http://shoop-ft.ru/my_grandmothers_house_poem_summaryjjzca.pdfIn PDF document text
    • https://cdn.sqhk.co/fisoxinizo/daxjihe/neighbors_federal_credit_union_login.pdfIn PDF document text
    • https://cdn.sqhk.co/vomisape/Xhahfia/xuwefobavov.pdfIn PDF document text
    • https://cdn.sqhk.co/sijiposago/bihhgcU/msc_entrance_form_2019_mjpru.pdfIn PDF document text
    • http://13millions-warzone.store/vuwupazupolidadetagmrwf.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/lowuwofuxali/natarake.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f83557a6-5bc3-48db-a1a1-58add7b91b18/how_to_write_a_reality_show_script.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/285a26f5-20f9-4197-be36-92e886373f05/used_roland_fantom_x6_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/denon_avr-s900w_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/69046051671.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/definicion_de_rectilneo_uniforme_en_fisica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ccb9b24-da35-4cca-84ec-deabbc111c42/facebook_recover_account_without_email.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c759af0c-693d-4c6c-9e3f-6cd906a2e03b/the_house_on_mango_street_chapter_14_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/26929051282.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75b435bf-a393-45e3-bdd5-35798bf31876/dyson_cinetic_big_ball_canister_vacuum_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/pilevuzadarokofopuguk.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_off00011249.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11249 4756 bytes
SHA-256: 1db6797bc970f30f3cd30dc4ed6dad41e90b2b26fe42db5be542393d5f56adca
font_01_sfnt_off000122a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122A0 11124 bytes
SHA-256: 85fadb25c380d627b17bb0ec86ff006c32fdeb1325efc1b21df0edfeca26bd49

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