Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3a3380c5abb948c…

MALICIOUS

PDF

75.4 KB Created: 2021-03-13 15:01:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c6f191862e9b97adcfd836b538370574 SHA-1: 59fdfc9478a4828a99b6e57c9dc1a8cc85c63aa9 SHA-256: b3a3380c5abb948cba92c65eaa18ec07de58a6ebb58adbe55c0cdee7e1e2bd1f
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 0.9991

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://leonvi.ru/strik?utm_term=what+is+a+synonym+for+catch+sight+of PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4409992/normal_5fcbe5ab1dd54.pdfIn PDF document text
    • https://cdn.sqhk.co/pazaxefuma/MhbvidZ/invasion_of_privacy_1984_examples.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452381/normal_5fc6993027cd4.pdfIn PDF document text
    • http://lifokuvaxodime.iblogger.org/unity3d_android_sdk_version.pdfIn PDF document text
    • http://pusuwanoxanopo.22web.org/20903306308.pdfIn PDF document text
    • https://cdn.sqhk.co/kewawukufiju/Ypjegd8/happy_birthday_sister_in_law_images.pdfIn PDF document text
    • https://cdn.sqhk.co/rarukaboz/d0Gjbgd/five_sisters_thai_menu.pdfIn PDF document text
    • https://cdn.sqhk.co/zezugiwetibe/jcPBjf9/buena_vista_golf_course_dekalb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475406/normal_5fdf2f1e5c59e.pdfIn PDF document text
    • https://cdn.sqhk.co/lojadisexudo/eTha6gj/viwug.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/98a75d57-382f-44dd-a036-b2bebd544a6f/english_speaking_classes_in_noida_sec_12.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0acf0c2-5d1e-4c28-a1ee-3c2f4cac9b89/glimpses_of_other_realities_facts_and_eyewitnesses.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e4486c0-0e71-49f1-b2ed-cc388c7b9fef/nordictrack_c700_treadmill.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20a7f97f-9c37-41e4-8164-f07ec45b8470/what_days_are_stock_market_closed_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb68b7f8-ccc0-4ee2-9735-f4c7086a36b6/borizukopipe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c42b5088-31b5-4dec-aae3-b2419c188ddd/a_crack_or_fracture_in_earths_crust_is_a.pdfIn PDF document text
    • http://nimunofat.epizy.com/best_fitness_tracker_smartwatch_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeb7c1b9-be91-412f-8b0a-88c8df4e60e2/biddeford_electric_blanket_auto_off.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89248817-e07e-4804-9555-7977051f5e99/keto_diet_for_indian_vegetarians_without_eggs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/519b0190-daeb-4ba2-8d01-e60a4758e4e7/polaris_ranger_1000_utv_for_sale.pdfIn PDF document text
    • http://fesifudojepaj.epizy.com/15727432488.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d399f3e-75ad-4d69-9313-849581e6daed/does_lg_make_sound_bars.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23e2517d-0816-4805-bdf8-6417d2c83dfb/29722958643.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84a7e4ac-e8de-48ea-aa6c-4aa2ffb8116a/rikuba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d9d64ca-b143-4b53-a723-307aa3cf0325/dell_poweredge_2900_system_board.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_off0000e17f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE17F 5376 bytes
SHA-256: 1ebee154bb502c47d313b042d0e61df510d2b57bb99fff824a39134fb2e3cd06
font_01_sfnt_off0000f3b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B5 12912 bytes
SHA-256: 3c48060cb16059cbef0082a73f7921eaf7d96fdb75b2e70423f757bf71631465

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