Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a217579fc52bdd5…

MALICIOUS

PDF

76.2 KB Created: 2021-04-06 14:00:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 281f56a651193a96426ab0c3b5cdaade SHA-1: 5cc2e7f89d4907c93629b66de3be7342442705c2 SHA-256: 8a217579fc52bdd524654d855de489ef52a858bceb62775d326604d1052b6591
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://lozipotod.ru/strik?utm_term=list+of+gluten-free+foods+and+snacks PDF link annotation
    • https://cdn.sqhk.co/junizafuzep/jhhdifY/gatebokadowaja.pdfIn PDF document text
    • http://limecash.xyz/krugman_wells_macroeconomics_5th_edition07q83.pdfIn PDF document text
    • https://cdn.sqhk.co/kosifodalab/a5G00gj/91755004950.pdfIn PDF document text
    • http://mp4.design/kijosijuxuxerozufozilemacf14w.pdfIn PDF document text
    • http://vir-tus.com/what_is_the_summary_of_ulyssesb6hep.pdfIn PDF document text
    • https://cdn.sqhk.co/jitolado/iigogjJ/first_horizon_business_account.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/e7e21e09-c23e-4268-b302-f68e5ea1489b/mobile_application_development_lab_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba91689e-0913-430e-9188-3064a65a19d7/loud_and_clear_speech_therapy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e878c9ce-80c3-4e43-a7e5-0c732084efdb/rousseau_social_contract_theory_explained.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3df088c6-1bd1-49c3-97ab-6e79a8465302/un_oso_y_un_amor_story.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54c47fbf-d21a-478c-98da-2819d5ef7b7d/bisevajesojejikozavup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3516c238-e149-4cb8-b182-1fe9627c3b38/woxeritalil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/212c4b21-da7e-44c4-bec8-913c32a5173e/ebook_organizational_behavior_17th_edition_-_standalone_book.pdf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a30aee8d-2b19-4d06-a27b-28124b4439d8/putobewupe.pdfIn PDF document text
    • https://s3.amazonaws.com/lekezaru/ielts_writing_practice_answer_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/how_to_spot_a_fake_national_insurance_card_card.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88036b94-9061-41ce-aa98-16d3a748fe33/92137902687.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_off0000ec04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC04 5228 bytes
SHA-256: 167977c06b892417fa4c52f60b1ea13820cf0bfdb932e0d3ba8e2bdd10a483f0
font_01_sfnt_off0000fde7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE7 11592 bytes
SHA-256: 4053b5241c481ff33c5282e0f65908bc5854c02926d2bb4dcb3875a21265ed22

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