Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d1dd5c4af6d4027…

MALICIOUS

PDF

86.4 KB Created: 2021-03-14 22:44:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 318d508124682ab3f77af096df7dcddf SHA-1: aef15735e683592a4c1f085b9a4177efc833d843 SHA-256: 1d1dd5c4af6d40278e09326c2d64c272445de2142527e38b2c535de78685924c
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is highly indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. The document body, though heavily obfuscated, appears to be related to search result content, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://midufefew.ru/wix?keyword=ark+survival+evolved+trophy+list
    • https://static.s123-cdn-static.com/uploads/4484103/normal_5fe03fdec77dc.pdf
    • http://galufixagomedo.getenjoyment.net/guzimuzaruxidux.pdf
    • https://static.s123-cdn-static.com/uploads/4366057/normal_5ff1fc9f2a27a.pdf
    • https://cdn-cms.f-static.net/uploads/4416940/normal_601dcdce64509.pdf
    • https://static.s123-cdn-static.com/uploads/4393022/normal_60072d87b47c4.pdf
    • https://static.s123-cdn-static.com/uploads/4462066/normal_5fcf243f15fa9.pdf
    • http://vizazovabula.mywebcommunity.org/88580635854.pdf
    • https://cdn-cms.f-static.net/uploads/4374185/normal_60446c57a9de4.pdf
    • https://static.s123-cdn-static.com/uploads/4446772/normal_5ffdb6fa57df6.pdf
    • http://boxidodo.22web.org/43662031336.pdf
    • https://static.s123-cdn-static.com/uploads/4427501/normal_5ff09dd31d42e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fosisidevafepet.epizy.com/nys_pistol_permit_application.pdf
    • https://uploads.strikinglycdn.com/files/cc1d1964-2652-404b-a170-0507307aa35d/do_you_have_to_reset_furnace_after_changing_filter.pdf
    • http://xinifaduzinuvu.onlinewebshop.net/sign_of_the_beaver_download.pdf
    • https://uploads.strikinglycdn.com/files/353894a9-9631-4dfb-8232-3cd72e0e5b3f/how_to_install_britax_pioneer_harness-2-booster.pdf
    • http://fuvogel.rf.gd/honda_generator_eu3000is_oil_change.pdf
    • http://wedinuvudazoxo.rf.gd/49507135391.pdf
    • http://farilofisimoru.rf.gd/importance_of_report_writing_in_criminology.pdf
    • http://xebizeluzifavi.rf.gd/the_bear_by_william_faulkner_characters.pdf
    • http://wogakuw.rf.gd/geometric_transformations.pdf
    • https://uploads.strikinglycdn.com/files/15b05973-f169-408f-9a36-2fc18fa76e6b/12087139701.pdf
    • https://uploads.strikinglycdn.com/files/20e388b3-c9ee-4ce8-8096-6d44527c6719/experimental_organic_chemistry_6th_edition.pdf
    • http://keregimuw.onlinewebshop.net/resumo_quimica_organica_nomenclatura.pdf
    • http://fewetero.epizy.com/sidekojukazudogu.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_off000115cc.bin
029c1b01ebdcd4f3dbfcae2ad312cffa292cbcc5fab96306bb70556bed143a96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115CC 5264 bytes
font_01_sfnt_off000127bc.bin
dc2c7386a9160317ea4fe07f75660d6704ef8cc57e6475b3b9fbeb681065f82a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x127BC 10632 bytes

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