Malicious PDF — malware analysis report

Static analysis result for SHA-256 63ddca45c84e88fd…

MALICIOUS

PDF

79.5 KB Created: 2021-03-24 09:59:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 10ed31f148a06c8b5f735cce1192e473 SHA-1: e119e6c7e7a379016054e5d83d56532070b96e61 SHA-256: 63ddca45c84e88fdb610a86b7bdb68ed3f785b68e0fad0dff309d30d6287ee31
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and 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 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wix?keyword=hay+day+hack+without+survey+or+password PDF link annotation
    • https://cdn.sqhk.co/mawejoxejobe/jgdjbia/voxavonoxoxu.pdfIn PDF document text
    • http://jonotijero.medianewsonline.com/xivubawasagafuwodatofen.pdfIn PDF document text
    • http://gugolufixa.mywebcommunity.org/tekez.pdfIn PDF document text
    • http://zujuzerawijuk.medianewsonline.com/periodic_table_ncert_class_10.pdfIn PDF document text
    • http://italywow.pro/dowijimesomezeje1z6.pdfIn PDF document text
    • http://sale20.site/49066433299kodw7.pdfIn PDF document text
    • http://forpost-electrica.ru/6175385568302cud.pdfIn PDF document text
    • http://pl50off.info/78514703205hadm0.pdfIn PDF document text
    • https://cdn.sqhk.co/nigalasiline/e2t2hbI/picture_of_7_wonders_of_the_world_original.pdfIn PDF document text
    • http://latencfsrt.space/avira_antivirus_windows_7t5ncv.pdfIn PDF document text
    • http://vebejisidag.66ghz.com/l_blends_worksheets_printable.pdfIn PDF document text
    • http://tagaporigowekis.mygamesonline.org/shoprider_streamer_fault_codes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://jomozaredid.rf.gd/10131586046.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e7d9b77-64b1-44a0-aa09-fa26f2519183/best_infrared_light_therapy_at_home.pdfIn PDF document text
    • http://widusop.atwebpages.com/71554085265.pdfIn PDF document text
    • https://0c2a7d7b-be9d-4ef2-a94c-09ca905cc17d.filesusr.com/ugd/7d21c0_59266061309f4095a8e1f751c52f6d30.pdf?index=trueIn PDF document text
    • https://44dd6259-7513-41c7-b2f1-b2b1fc385d2e.filesusr.com/ugd/63022f_443841d543404618904bf01315b4d288.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/065ab4f7-21a5-43f9-8349-114618ff5cc9/tetiliwalipinufisa.pdfIn PDF document text
    • http://zotodigigaki.epizy.com/small_download_app.pdfIn PDF document text
    • http://mixonanax.epizy.com/tujhko_bana_kar_ke_video_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ba2eeda-1451-436d-8c86-9ab9bdd10b8b/plantronics_m180_earpiece.pdfIn PDF document text
    • http://keporeninudo.rf.gd/dark_souls_remastered_switch_fps.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED89 5184 bytes
SHA-256: 6bc64258c702f5a061da1edb6114f5693e713b59443c6b6ef59064efd5ef6f04
font_01_sfnt_off0000ff56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF56 10336 bytes
SHA-256: 6efa93545933157889a25e763544e3884e4ae8515d87791def9d6e93d7ccdfda
font_02_sfnt_off00012288.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12288 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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