Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbe3b31ee2dfe5e5…

MALICIOUS

PDF

76.7 KB Created: 2021-03-04 09:22:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78cd4164987b358c7589f1fc29b9b852 SHA-1: 19b72d8eb071191cfdbee8d1a27aab059d565671 SHA-256: bbe3b31ee2dfe5e5d3a2e26e81b0ec6e216baa9d8c45c6c0fd59d2b026c52d2a
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to resetting a Firestick remote, directing the user to a malicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lead the user to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://kuzutuzo.ru/strik?utm_term=how+do+you+reset+a+firestick+remote
    • http://return-0.com/legapiwugabapukejo7kkd1.pdf
    • http://milansit.space/top_boss_fights_video_gamese5jch.pdf
    • http://canonsburglake.com/making_karyotypes_worksheet_answerswhluq.pdf
    • http://servicesforsupport.com/qu_nmero_te_dices_el_nmero_de_eleqhijk.pdf
    • http://creditpm.com/rimas_y_leyendas_analisisb9jzj.pdf
    • http://springwin.space/amazing_grace_chords_piano_easy7f4vs.pdf
    • http://petersikdar.com/dekibezaxedevatatabeto62o3t.pdf
    • https://cdn.sqhk.co/kiwikiza/qywSii8/darasovedawumopipewinud.pdf
    • http://furniture21.online/kegunaan_maybelline_baby_skin_instant_pink_transformer9yui0.pdf
    • http://masalev.ru/quadratische_gleichungen_lsen_mit_pq_formel_rechnerpcvg2.pdf
    • http://matcobzor.ru/iphone_app_store_for_androidfqr51.pdf
    • http://reduslim-buy.site/tubidy_free_mp3_downloads_for_pcbfabo.pdf
    • http://xrootunited.com/the_last_wish_full_movie_downloadaqhz6.pdf
    • http://trackcreditscore.info/voxitekenedaqlod7.pdf
    • http://klosheff.xyz/wuboweliyqeuy.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://mevanuzexujen.rf.gd/debiburerijesuregat.pdf
    • http://tejojode.rf.gd/habitat_of_rainforest_animals.pdf
    • http://vuxotuketut.rf.gd/vatuzunukipovenujapotuf.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e275.bin
85125db28879b2896025e028d06643e86880469120f1c4f70a2850c5051bfe94
pdf-font-stream PDF embedded font (sfnt) at offset 0xE275 5132 bytes
font_01_sfnt_off0000f405.bin
f11229676e6ad01c2b3b8550a0d53d142e11c875ce78777998ab55d41094a0da
pdf-font-stream PDF embedded font (sfnt) at offset 0xF405 10240 bytes
font_02_sfnt_off0001170b.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x1170B 4324 bytes