Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a519fdf7d37ab84…

MALICIOUS

PDF

142.0 KB Created: 2021-02-17 06:27:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: f4ec846b09b22e8e1bdd3fe1d3954d2d SHA-1: 506e8cfa9586f98a316453f57254c6bb7f2a7ecf SHA-256: 8a519fdf7d37ab843c83331e8b3f04922e55ed965fc5468be1d7871ddbe5bb76
96 Risk Score

Malware Insights

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

The PDF file contains embedded URLs, one of which, https://druttle.ru/123?utm_term=netgear+universal+wifi+range+extender+wn1000rp+installation+manual, is flagged as suspicious and is presented within the document body as an installation manual. ClamAV detection and ML classification strongly indicate malicious intent, likely related to phishing or malware distribution.

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://druttle.ru/123?utm_term=netgear+universal+wifi+range+extender+wn1000rp+installation+manual PDF link annotation
    • https://cdn.sqhk.co/xenotami/jjyhiA9/zegoketabopupatolume.pdfIn PDF document text
    • https://cdn.sqhk.co/xugumewaz/hPltEej/guxosarubuzigug.pdfIn PDF document text
    • https://cdn.sqhk.co/wepunajexiju/Qicheie/cara_cheat_game_drift_max_pro.pdfIn PDF document text
    • http://mibeneto.22web.org/hd_wallpaper_1080p_1920x1080_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/satofurijob/aighdhh/57712281775.pdfIn PDF document text
    • http://pusokum.66ghz.com/nobel_video_song.pdfIn PDF document text
    • https://cdn.sqhk.co/navuwamas/1kfibhe/kedavosogixefe.pdfIn PDF document text
    • https://cdn.sqhk.co/sorubajuzoxe/8U1jdve/sky_factory_map_download_for_mcpe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://numodonodepo.epizy.com/29564005203.pdfIn PDF document text
    • http://tiwisuk.epizy.com/94375564809.pdfIn PDF document text
    • http://felawikemuda.epizy.com/70727072797.pdfIn PDF document text
    • http://zekovulelopur.epizy.com/zavagove.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_off0001eb85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EB85 5744 bytes
SHA-256: f88f5bdacfb0088377ee173021525c0b2607690382c2de633b62cc3b7ea5045b
font_01_sfnt_off0001ff29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FF29 13056 bytes
SHA-256: ad1feaeaf4eeea8ae942ca7bc65445119c8e58540654533ba5013808c595fe31

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