Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6eac340d3d072fa…

MALICIOUS

PDF

84.6 KB Created: 2021-03-24 04:08:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 02ac665f1f63a7a13557d3362987670a SHA-1: 5ecd42d71178a3486a6ce9da19d5690c2956a05f SHA-256: b6eac340d3d072fa7879d38335ba08e5dd39ec088e56e700ddae8f87b2147460
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://crophysi.ru/strik?utm_term=gramatica+ingles+b2 PDF link annotation
    • https://cdn.sqhk.co/fugolamudara/LUiaZqt/classic_chess_piece_designs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371014/normal_601f9f6e9f14a.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/fme3Gha/slayin_soul_knight.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470981/normal_603f94af00912.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380869/normal_6033c4f98b250.pdfIn PDF document text
    • https://cdn.sqhk.co/pixazizaze/y3yifjj/95155448073.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494866/normal_60142610e13c3.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
    • https://s3.amazonaws.com/lijopavexanuse/all_my_loving_ukulele.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/powerpoint_templates_exercise.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/botadivuluzoxibun.pdfIn PDF document text
    • http://luloxefisamo.rf.gd/what_is_the_meaning_of_community_development_project.pdfIn PDF document text
    • https://d5bea983-5bca-41ba-aae6-6b688785cc77.filesusr.com/ugd/9ec29b_23ed07c178024b2593f75d34e2cd3569.pdf?index=trueIn PDF document text
    • https://be8f41f0-9ddd-434d-ab6d-aa755a40b80d.filesusr.com/ugd/726d9c_4767b088e70f4482909c60f3d1b1e32f.pdf?index=trueIn PDF document text
    • https://6a24fdd2-d4a5-4c4b-882b-0f3115751bcf.filesusr.com/ugd/04e6f9_9bdfd13d61044f3896da4e43fd999be2.pdf?index=trueIn PDF document text
    • https://436010f1-0dd7-4950-aec0-3bdf337573e8.filesusr.com/ugd/5a4c69_57af69d587bc43f1bf18feb4c2dd771d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/sedofobidibonotonizi.pdfIn PDF document text
    • https://4121a797-204a-431c-92a8-8e24072fb342.filesusr.com/ugd/b972d5_84c410f77b8f422aa76cd96af2aa4e4d.pdf?index=trueIn PDF document text
    • http://vavixatobuzi.rf.gd/aix_en_bus_ligne_8.pdfIn PDF document text
    • https://9e2bb560-353e-4f5d-a08b-1363560edab4.filesusr.com/ugd/6c032c_d7e5767c939745bcbd014a62e69456f4.pdf?index=trueIn PDF document text
    • https://f4ef19d8-372f-49db-bbb6-0f5e16bfa625.filesusr.com/ugd/070799_0672dea3345c4fdd9ead6e5cc0eff547.pdf?index=trueIn PDF document text
    • http://ravuxigud.epizy.com/engineering_mechanics_statics_5th_edition_free_download.pdfIn PDF document text
    • https://95fbbc11-640f-4658-acdf-6e09da746871.filesusr.com/ugd/e42ee3_8c9190b2f0f448b3aa34f1a2c94f5537.pdf?index=trueIn PDF document text
    • http://puwoxigawezab.epizy.com/pabodafane.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_off0000f9f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9F7 5100 bytes
SHA-256: d26511efa9c0e4a74ea10e901a9d7e00137e90a4ece4905fe7f5ceb50b3af137
font_01_sfnt_off00010b31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B31 13020 bytes
SHA-256: 5eeb00515c016c3385c8bf2d9bd847b2350f779fc8995447f5664a36bc6d2e5c
font_02_sfnt_off00013508.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13508 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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