Malicious PDF — malware analysis report

Static analysis result for SHA-256 60e2dabb3be31f35…

MALICIOUS

PDF

79.5 KB Created: 2021-03-24 06:12:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 674e32b260b3370c118981bce6a38f3f SHA-1: 1fb7a5b8a74b81ee086d78445fa923bdb3415799 SHA-256: 60e2dabb3be31f35f18922610c8c8a3c5284a721091a65c7a0d15004e721034e
66 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 an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://soxebez.ru/wix?keyword=qooapp+apk+download+uptodown PDF link annotation
    • https://momigetufi.weebly.com/uploads/1/3/4/8/134876151/1545914.pdfIn PDF document text
    • http://gesabagipo.22web.org/best_place_to_donate_clothes_new_jersey.pdfIn PDF document text
    • https://sazaburesifug.weebly.com/uploads/1/3/4/2/134265765/tukoxuwisedov.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/nutritional_value_of_banana_peels.pdfIn PDF document text
    • http://gomesuzos.mypressonline.com/calidad_total_y_productividad_segunda_edicion.pdfIn PDF document text
    • http://liniwugo.iblogger.org/human_body_systems_worksheets_middle_school.pdfIn PDF document text
    • https://pedagojewixa.weebly.com/uploads/1/3/1/3/131398360/kewunudenemebeb.pdfIn PDF document text
    • http://jefuvumerusew.getenjoyment.net/49366835151.pdfIn PDF document text
    • http://finuxezanasa.mygamesonline.org/oxford_dictionary_download_free_full_version.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/97303740-df09-42e6-9a0f-1416042411f6/how_to_draw_a_realistic_dragon_flying.pdfIn PDF document text
    • https://s3.amazonaws.com/rejiner/jiregepadatadexes.pdfIn PDF document text
    • http://walugiguzav.epizy.com/android_google_maps_language_change.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/anjathey_tamil_movie_audio_songs.pdfIn PDF document text
    • https://12350a4d-732a-4148-85a7-4fa27f2a77ec.filesusr.com/ugd/17beed_7bdcde5eb2b74b919c30dc52c4c05ac1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/55356355554.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f5ef20a-8ca9-4642-8fcf-9332684f4b1d/mosutufikadelalojoperi.pdfIn PDF document text
    • http://nixomirorubu.myartsonline.com/efficient_r_programming_gillespie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6aaf5001-3029-4406-85f3-a1adb28f931a/bobuzopev.pdfIn PDF document text
    • http://lizaduguxo.epizy.com/aggiornamento_android_9._0_huawei_p20.pdfIn PDF document text
    • https://63b1f34b-4847-450f-8d9a-4788d10e1cf5.filesusr.com/ugd/451a43_3bd6a6cced6d4664b7779d79b9c39049.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF72 2900 bytes
SHA-256: bc1b821a424aa7ed9d0f3d272460713e7e3fc31632d993f6817914bbe2dba133
font_01_sfnt_off0000f9cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9CF 4896 bytes
SHA-256: 250719b8b5ab298a229b2cf881fb977ed6e98907d0d22fe4f39a02c509c994b5
font_02_sfnt_off00010aa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AA1 11076 bytes
SHA-256: 1462be415e00040ea0cffca098b17496237c319e1add416cbba9528271ca1f5d

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