Malicious PDF — malware analysis report

Static analysis result for SHA-256 a67c58a304f328b4…

MALICIOUS

PDF

76.9 KB Created: 2021-04-28 21:42:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c3faaa7bd61287de8fcdd5a69c9838f SHA-1: deaa4ddc31210c1b98019a4d57407982fbf4fb07 SHA-256: a67c58a304f328b4b233225f17957af6c164f3f70f8811945ffa6e3facc51aa4
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL and numerous other URLs suggest a phishing or malware distribution attempt, masquerading as a vacuum cleaner manual. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://pelibifir.ru/strik?utm_term=shark+euro+pro+vacuum+cleaner+manual
    • https://cdn.sqhk.co/xaxovowupofa/i9jjieK/515649682.pdf
    • http://kiparegazeratax.getenjoyment.net/anemias_y_su_clasificacion.pdf
    • http://suwadebizon.mywebcommunity.org/35337194656.pdf
    • https://cdn.sqhk.co/gegawudaxaxi/GgdSLii/sharpshooter_cracked_version_download.pdf
    • http://boribonabone.mypressonline.com/artificial_lung_ventilation.pdf
    • http://luxibenuguk.getenjoyment.net/biology_books_download.pdf
    • http://tadugebakonuged.getenjoyment.net/resumen_del_libro_la_divina_comedia_de_dante_alighieri.pdf
    • http://jepegupunu.mygamesonline.org/8538617969.pdf
    • https://cdn.sqhk.co/tifobebe/b0iaSn6/turugew.pdf
    • https://cdn.sqhk.co/wowixepis/6gciiqY/letuxilebosuzupisirod.pdf
    • http://bekopomulasebi.getenjoyment.net/osaka_subway_map_2020.pdf
    • https://cdn.sqhk.co/zakolemafemo/alq0OAu/xisusopiniganefimedala.pdf
    • https://cdn.sqhk.co/bedogipaxog/jhhgs8d/voruzojapisidas.pdf
    • http://kijuguwosaxo.22web.org/80404604045.pdf
    • http://piwulag.sportsontheweb.net/522206371.pdf
    • https://cdn.sqhk.co/zowipitilo/xyXhgjj/famous_american_football_players_names.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jojoleru.epizy.com/77892527075.pdf
    • http://gixarewujedel.atwebpages.com/povukadaxalakinelewut.pdf
    • http://jegigas.epizy.com/how_are_humans_dependent_on_the_environment_for_survival.pdf
    • http://setiwol.epizy.com/98092586880.pdf
    • http://bobixupeto.myartsonline.com/70313097859.pdf
    • http://gogositanisewu.rf.gd/lesev.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_off0000ecca.bin
21f2efa695927da749e6b5c6641c7b171795b709dc98dd881bce1427e52634d3
pdf-font-stream PDF embedded font (sfnt) at offset 0xECCA 5220 bytes
font_01_sfnt_off0000fe6a.bin
ba57ffecb96a3b0d97c6de9f02ac2b41546e1c459048cf824ddfd7dd7e3fabc4
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6A 11684 bytes