Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cc35972d6af7cc5…

MALICIOUS

PDF

73.0 KB Created: 2021-03-17 10:52:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 967b31a5d8674dc0a612ffc65726cb00 SHA-1: 6d1416c5a0f7a9c3421e451d5f56582bc9acc07d SHA-256: 2cc35972d6af7cc50ecd5acc28889c0014df9206107aa0665720ed03ce55e913
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an embedded URI pointing to 'dafemum.ru' suggests a phishing attempt to trick the user into downloading a potentially harmful application. The document body, though heavily obfuscated, contains references to 'Mayfair apk firestick' and 'wkhtmltopdf', further supporting the lure of a fake application download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dafemum.ru/wix?keyword=mayfair+apk+firestick
    • https://cdn.sqhk.co/famuxina/pgfifRv/dijerifamadidunodonuge.pdf
    • http://best-store.club/catan_classic_apk_espaol80951.pdf
    • https://cdn.sqhk.co/budajawisore/bhiZUha/stick_cricket_live_best_cards.pdf
    • http://betixisu.22web.org/78561644573.pdf
    • http://gasurorir.sportsontheweb.net/25580184734.pdf
    • http://mikovil.mywebcommunity.org/bakexena.pdf
    • http://pifesato.iblogger.org/pafapebasexesa.pdf
    • http://cccckkkkkdd.space/kavokike84rx3.pdf
    • https://cdn.sqhk.co/xonarewu/eijLrjc/54695954622.pdf
    • https://cdn.sqhk.co/zadoweferoxe/ggZgjhO/vopokisetilawivusokisu.pdf
    • https://cdn.sqhk.co/soziwariru/9hhUrja/verizon_care_smart_app.pdf
    • https://cdn.sqhk.co/jitolado/ldva1xL/93602052587.pdf
    • http://miromawetibikew.mywebcommunity.org/kidoxo.pdf
    • http://xunarepozufuz.mygamesonline.org/friendship_story.pdf
    • https://cdn.sqhk.co/ruwonumatag/jNgdx2r/wallpaper_lock_screen_iphone_7.pdf
    • https://cdn.sqhk.co/fumodolanes/hibRid3/84074998392.pdf
    • http://brosbass.com/sexudmrutj.pdf
    • http://latencfsrt.space/xetumizawoxatepanaurt00.pdf
    • http://kexedoliresile.22web.org/lavobimoxamajudagapamop.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fobupojowojon/hp_elitebook_x360_830_g6_datasheet.pdf
    • http://vugugemo.atwebpages.com/kegenapipemiwetowa.pdf
    • http://gagarereforer.epizy.com/idlewild_park_coupons_sheetz.pdf
    • https://s3.amazonaws.com/xonaxevetaf/estar_formal_command_ustedes.pdf
    • http://dakezimipage.epizy.com/que_es_anemia_falciforme.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_off0000dfb3.bin
e6bb7f1246e5ada857e40ee99d5f57f3a0260b2b540204c9d8e4821940a82807
pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB3 5148 bytes
font_01_sfnt_off0000f167.bin
7435825b7bf200e7acf83710535ae6365b4a8cc1bb109f1632ceb3ae538d1ef4
pdf-font-stream PDF embedded font (sfnt) at offset 0xF167 11128 bytes