Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cbc0e4e5ed2c604…

MALICIOUS

PDF

67.6 KB Created: 2021-03-14 02:49:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d4eb3d00b2c9fb1f78ee17b90113d1e7 SHA-1: 7561a51795e979388533efc3b858830cdad59aa7 SHA-256: 4cbc0e4e5ed2c6044442db11453e15438d5007fffba6e79fe41e964e723fa3bb
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://resalured.ru/award?keyword=boundary+value+problem+example+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4485172/normal_60064a4e80e54.pdfIn PDF document text
    • http://lezigovedavide.getenjoyment.net/logitech_wireless_gamepad_f710_not_working.pdfIn PDF document text
    • http://tafakiduwav.scienceontheweb.net/34662546437.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478383/normal_5fdeebed007dc.pdfIn PDF document text
    • http://tejovotemikodes.getenjoyment.net/john_boardman_alexander_the_great_from_his_death_to_the_present_day.pdfIn PDF document text
    • http://vosajizegek.mypressonline.com/cambridge_english_proficiency_test_sample.pdfIn PDF document text
    • http://pobunav.sportsontheweb.net/mikoxigonazibonu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415936/normal_600c3c284419d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388041/normal_600279b3ada58.pdfIn PDF document text
    • http://natezaka.iblogger.org/libevasufujibo.pdfIn PDF document text
    • http://danixoxixofizi.iblogger.org/seascape_with_sharks_and_dancer_monologue.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455645/normal_602fa3d47aae3.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/9e83aa71-1876-4d6f-9a5c-eaa563ff880b/uber_driver_support_number_uk.pdfIn PDF document text
    • http://wofuxax.rf.gd/mixuxewov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac7c265b-7880-4949-8908-94027dcd1a6c/jomojopagewaborazijuzigo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/becac619-0b8c-40dc-a159-e3a701d5b302/is_ahsoka_tano_in_episode_2.pdfIn PDF document text
    • http://sonatalub.epizy.com/boolean_logic_cheat_sheet.pdfIn PDF document text
    • http://pubexet.rf.gd/87601439893.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee9242bf-4039-4eb2-a6a4-2354ce9b727b/13010555738.pdfIn PDF document text
    • http://kisolapuri.rf.gd/where_are_you_now_song_wapwon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f67098b-470f-4290-b5f8-1683f86a155f/harry_wong_classroom_management_book.pdfIn PDF document text
    • http://nikalokibutoxes.rf.gd/iicsa_nottingham_report.pdfIn PDF document text
    • http://fesebeta.rf.gd/tapan.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_off0000cb4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB4D 5428 bytes
SHA-256: 3519bf2ee19c70d7722b16c1bf04da1b4b75b2e069da89abc147e8a610bdaafd
font_01_sfnt_off0000ddbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDBF 10236 bytes
SHA-256: 50517b500dede3663a34c2f18053eaa49d4778539facb43a68295caf82356db4

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