Malicious PDF — malware analysis report

Static analysis result for SHA-256 5823cee444a4f31b…

MALICIOUS

PDF

312.7 KB Created: 2021-05-14 11:47:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f4759e2098322abde50347a2937e6e4f SHA-1: 8cc076b2156dede69dbc249ec4272847ef06b257 SHA-256: 5823cee444a4f31b095a9664faa8d6daf5ba5ffc4e5e9c121d5d9e57425b718c
96 Risk Score

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 0.9854

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://jacksth.ru/strik?utm_term=dnd+4e+feats PDF link annotation
    • http://tuvivukaroj.mygamesonline.org/the_killing_joke.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/4hgjido/xemifesoraruvuxaneno.pdfIn PDF document text
    • https://cdn.sqhk.co/tubawonidas/igdIkVa/snapchat_logo_aesthetic_red.pdfIn PDF document text
    • http://degifutuv.scienceontheweb.net/62549577975.pdfIn PDF document text
    • http://zupadegitikexe.22web.org/basic_computer_tutorial_free_download.pdfIn PDF document text
    • http://xorabawik.medianewsonline.com/administracion_financiera_ochoa.pdfIn PDF document text
    • https://cdn.sqhk.co/viwitukaz/Qs7igij/play_store_games.pdfIn PDF document text
    • https://cdn.sqhk.co/lumolixuwo/jh0jjii/17856320419.pdfIn PDF document text
    • https://cdn.sqhk.co/kajurineg/jhd6Z5L/tofefizitotibuzeken.pdfIn PDF document text
    • https://cdn.sqhk.co/gozawelesutu/huifuLP/arena_of_valor_patch_notes_august_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dafumuxitupav/25677317727.pdfIn PDF document text
    • http://xuxivobanirug.epizy.com/hematology_basic_principles_and_practice_hofmann.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/boworanuterazu.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/mapa_geologico_de_el_salvador_formaciones_geologicas.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/ludebapizuzejuxi.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/91019860842.pdfIn PDF document text
    • http://jofanebef.rf.gd/lg_34uc89g_34_review.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_off00049b79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49B79 4860 bytes
SHA-256: 5e274aaff64270f35755472ba3bf28c7726cfc781e0d3d122147e8c0500e4f83
font_01_sfnt_off0004ac1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AC1F 11304 bytes
SHA-256: 7dabaa583031b8603a0af069ca70c5af364218f27c20d9870db652cbeea6fe64

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