Malicious PDF — malware analysis report

Static analysis result for SHA-256 4badc46dea321fc8…

MALICIOUS

PDF

90.0 KB Created: 2021-05-22 04:18:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 0d8df048e8e473cbdaee3d2e3968a8f6 SHA-1: 9fb918420bb3b097a6f5ab724f6419acf468cc30 SHA-256: 4badc46dea321fc8b6b97264341c0b08ef5dc84a525b98e0adcb115a827e06c2
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. No scripts were extracted, but the presence of the malicious URL suggests an attempt to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/strik?utm_term=babylon+mystery+religion+pdf PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f7219e5-084c-4b5a-a4d1-1772f6e12faf/can_u_cancel_planet_fitness_membership_online.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/additional_insured_endorsement_form.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/92199924916.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2047e6e-8b0a-40f0-b9cc-1e2eaaabba68/rainbow_srx_vacuum_cleaner_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/038f9c3d-a2a2-4644-8f87-e36f58502937/samsung_galaxy_s5_buy_australia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b27a925e-66a1-429a-a5ab-faddeb523c11/11117521095.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4d15e70-79fe-4fde-9e79-e0aa2c42fb94/fovefiloxego.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dbe903b-cb65-49dc-8ed1-bf3d393d415e/5419374817.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/workforce_2630_epson.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/a_chorus_line_nothing_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/tesomazomow.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/kabonijulun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d165bb48-2521-44d8-a7ae-e9dce7842603/bekur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5b57362-d62a-4f7f-8618-51c3a49be007/smite_book_of_thoth_nerf.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/how_to_fix_time_on_honeywell_thermostat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5a19474-0bcf-4e69-b2e4-aac4d8f0bfb4/62628019695.pdfIn PDF document text
    • https://s3.amazonaws.com/gimufesajo/api_platform_disable_pagination.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07dab6e8-02a5-4db6-96c6-6888550baa48/jezarekuzesetomewuvavoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac60711c-ff96-43fd-b299-8cdf2b582aa5/westinghouse_light_timer_28499_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5956ce0f-4b19-497e-b367-51e55e99ac5e/67323390485.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_off00012169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12169 5652 bytes
SHA-256: 3bf02043cf049c88bed848d2ff2d57029bd150d70510992699a1488ac5f4e958
font_01_sfnt_off0001348d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1348D 11196 bytes
SHA-256: 990863126c0ba4f72b98529729673a26f65ff2dea78a05ceb97ea689bc16b754

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