Malicious PDF — malware analysis report

Static analysis result for SHA-256 668e93e6c5dc1c05…

MALICIOUS

PDF

101.2 KB Created: 2021-03-03 21:21:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 931abbe758aa3a9a867c045f21adb7a8 SHA-1: c28ea1cf42bb1a4125304602afbbccb3db7c768a SHA-256: 668e93e6c5dc1c055689d77a1a8a87dd308e306006c1a13143226ffdf21b994c
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, identified as a lure for potential victims. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan distribution attempt. Although no scripts were explicitly extracted, the presence of external URIs and the overall detection suggest the document is designed to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/award?keyword=fighter+guide+5e+doc PDF link annotation
    • http://b0xberry.online/safe_haven_full_movie_free_downloadt0ppx.pdfIn PDF document text
    • http://pakirekugep.scienceontheweb.net/gilitubuxala.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484995/normal_602a9ef495d58.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380392/normal_5fd085bd84749.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479214/normal_5ff8c7439a869.pdfIn PDF document text
    • http://theplafond.xyz/korean_language_learning_books_free8yw5r.pdfIn PDF document text
    • http://sagunutu.medianewsonline.com/66794297164.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387811/normal_600f3a87a08e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365619/normal_60078c9686005.pdfIn PDF document text
    • http://fajujefa.getenjoyment.net/qlikview_tutorial_point.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458827/normal_6034d1fc77b6a.pdfIn PDF document text
    • http://vekisonoloze.sportsontheweb.net/vezetonivipudezuxasuk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489240/normal_603d288dbecc8.pdfIn PDF document text
    • http://kersita.space/blackpink_dududu_wapkak3lvs.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/xbox_360_controller_pc_adapter_setup.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488582/normal_5ff86bae07aec.pdfIn PDF document text
    • http://piredvizhnik.com/varolimon78ij.pdfIn PDF document text
    • http://rowowesofazov.medianewsonline.com/how_to_start_a_business_electrical.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/bokelur/firefox_android_app_dark_mode.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_off00015419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15419 4860 bytes
SHA-256: a1fc984198293ec96331eb23c34d99b7c4c27951eb17ca92e947a815d254c9d4
font_01_sfnt_off000164a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x164A8 10240 bytes
SHA-256: d1bd420dcdf22c3fd632a87feaed1399a986a5b4348282f06c2870d56ae9cbf3

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