Malicious PDF — malware analysis report

Static analysis result for SHA-256 cccb41dbe3c63e73…

MALICIOUS

PDF

77.5 KB Created: 2021-03-29 15:35:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7944dac941a5b3b55c6cd8eebf3e02d4 SHA-1: 5cd49b808e2566c3e30c057cd68854ea740555d5 SHA-256: cccb41dbe3c63e73633fac687deb6ea04bc69b1fa02a14fb31b8e05121fb5d98
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to exploit user curiosity or a specific search query to drive traffic to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://soxebez.ru/strik?utm_term=what+is+free+flowing+brown+sugar
    • http://leririv.sportsontheweb.net/79304682933.pdf
    • https://static.s123-cdn-static.com/uploads/4490133/normal_60041bce2cc2f.pdf
    • http://zafikapasipugog.medianewsonline.com/rakawijobabopalozizatuv.pdf
    • http://dikoxikikalonib.scienceontheweb.net/mezetunuzexixe.pdf
    • https://cdn-cms.f-static.net/uploads/4454435/normal_602a12fc3a194.pdf
    • http://wovuwukotuvoxi.mygamesonline.org/zonavetuxum.pdf
    • http://terakusinuw.mypressonline.com/xiwetewu.pdf
    • https://cdn.sqhk.co/pisimebuziz/bdiapgf/85801742583.pdf
    • https://static.s123-cdn-static.com/uploads/4366010/normal_5fe23700903ac.pdf
    • http://vufiwopader.medianewsonline.com/enga_karuppasamy_song_lyrics.pdf
    • https://static.s123-cdn-static.com/uploads/4373281/normal_5fe22e7de9b1d.pdf
    • http://golulim.iblogger.org/fegavaropewanipedujali.pdf
    • http://loziwazekon.medianewsonline.com/english_spelling_rules_list.pdf
    • https://static.s123-cdn-static.com/uploads/4379731/normal_5fe31e60a90d1.pdf
    • https://cdn.sqhk.co/bojowagawire/cjb3jge/toca_kitchen_2_gratis_para_pc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wojibikifi.myartsonline.com/que_se_necesita_para_ser_un_lider_eficaz.pdf
    • http://golunelew.epizy.com/focusrite_scarlett_price_in_bangladesh.pdf
    • http://nipelijikiki.onlinewebshop.net/analogias_verbales_resueltas.pdf
    • http://vefuvepux.epizy.com/debt_snowball_spreadsheet_vertex.pdf
    • http://mojokefav.epizy.com/gekemoxixinuxi.pdf
    • http://sukufitax.epizy.com/what_is_a_greenery.pdf
    • http://fosekor.epizy.com/neverending_story_lyrics_song.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef86.bin
6d9fcc1266c91cca2c11e0475a84f5ed6fae689b439688ab4f8c97f8e178994b
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF86 5272 bytes
font_01_sfnt_off0001018a.bin
c3818e03aec08b04f99ada4febcdaab00ed9f7c07487df1b75b5a1d4bb69ea19
pdf-font-stream PDF embedded font (sfnt) at offset 0x1018A 11344 bytes