Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ac3a8a3d897936f…

MALICIOUS

PDF

79.4 KB Created: 2021-04-10 09:07:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4b732c56d039bf727c11eb9fd39701d4 SHA-1: 982d2a58bb5ce42cffb7d6f65528894442ebf350 SHA-256: 7ac3a8a3d897936f60c8c48600eabd44752beb90093740200b7b5805f9c4c411
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://resalured.ru/strik?utm_term=anaconda+python+3.8+download+mac PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417207/normal_602b481a2d260.pdfIn PDF document text
    • https://cdn.sqhk.co/vimerokil/aiieghF/adventure_island_mini_golf_prices.pdfIn PDF document text
    • https://cdn.sqhk.co/nobixapo/DEgf0KA/tower_defense_warcraft_3.pdfIn PDF document text
    • https://cdn.sqhk.co/janurisu/jMhfejb/vibukikigefalegarawosi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473340/normal_604378d33a05b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460966/normal_5fcf62fb58293.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382973/normal_602876e1cc55b.pdfIn PDF document text
    • https://cdn.sqhk.co/jomububorava/Pjdgiij/hobby_lobby_parkersburg_wv_phone_number.pdfIn PDF document text
    • https://cdn.sqhk.co/gixirunizem/RggidGc/49627534250.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370097/normal_5fc759bcd0210.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vivetusukuv.onlinewebshop.net/wudizeduwenatiliwabexorap.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/zigipuxoxadipovazusadog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14e21e7a-0128-495a-8fd3-441b3b11255c/is_peripheral_cyanosis_an_emergency.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b6722a2-47e5-44ab-a54a-8a77ce391ea6/sininoganaxuji.pdfIn PDF document text
    • http://molujafit.atwebpages.com/manual_lisp_para_autocad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9ee63df-432a-4beb-8382-f7890caacdfd/light_novel_recommendations_isekai.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ac54fab-769f-4caa-8af1-2607f9eff2d3/51313563413.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb47b214-ecaa-4e96-b825-7a24f20d8168/how_to_calculate_mean_median_mode_and_standard_deviation.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/rosetovuxenefog.pdfIn PDF document text
    • https://s3.amazonaws.com/xaliwalufoguni/abbey_glover_please_don_t_go.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_off0000f7a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A3 5612 bytes
SHA-256: 52c6678188b73cb23dabbbb4353fb086a059a643985f09cf111bf9a90ef7fc4a
font_01_sfnt_off00010abd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ABD 10936 bytes
SHA-256: d82031dd3b07bac13fb4ac221430ff65485aa3a68cddd5270707ffa1f610f578

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