Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f3ec3ec693c1b41…

MALICIOUS

PDF

35.7 KB Created: 2021-06-25 02:03:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fe43cf7409545a811803aba8e62fdb16 SHA-1: 241d0fa3dd8738e213b309777f0bbd31031a2f37 SHA-256: 2f3ec3ec693c1b41c484f25591d891574cc20d9bca6c0670554031e99e20914f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://netcdn.co/app/431946152/www-roblox-cheat-game-hack PDF link annotation
    • http://elearning.mas.aljihad.sch.id/__statics/gudangsoal/files/how-to-noclip-in-roblox-jailbreak-cheat-engine_GM431946152.pdfIn PDF document text
    • http://elearning.mas.aljihad.sch.id/__statics/gudangsoal/files/wwwfree-robux-hackcom_GM431946152.pdfIn PDF document text
    • http://elearning.mas.aljihad.sch.id/__statics/gudangsoal/files/free-money-logo-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mas.aljihad.sch.id/__statics/gudangsoal/files/como-hackear-jailbreak-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mas.aljihad.sch.id/__statics/gudangsoal/files/how-to-change-values-on-roblox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://elearning.mas.aljihad.sch.id/__statics/gudangsoal/files/free-promotional-code-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mas.aljihad.sch.id/__statics/gudangsoal/files/free-roblox-object-en-vedette_GM431946152.pdfIn PDF document text
    • http://elearning.mas.aljihad.sch.id/__statics/gudangsoal/files/how-to-hack-the-livind-dead-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mas.aljihad.sch.id/__statics/gudangsoal/files/flame-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://elearning.mas.aljihad.sch.id/__statics/gudangsoal/files/como-hackear-a-cualquier-jugadores-de-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mas.aljihad.sch.id/__statics/gudangsoal/files/free-name-snipes-roblox-verm_GM431946152.pdfIn PDF document text
    • http://elearning.mas.aljihad.sch.id/__statics/gudangsoal/files/free-robux-just-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://elearning.mas.aljihad.sch.id/__statics/gudangsoal/files/digimon-masters-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://elearning.mas.aljihad.sch.id/__statics/gudangsoal/files/sad-outfits-that-are-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mas.aljihad.sch.id/__statics/gudangsoal/files/roblox-a-bizzare-day-cheats_GM431946152.pdfIn PDF document text
    • http://elearning.mas.aljihad.sch.id/__statics/gudangsoal/files/hao-hack-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mas.aljihad.sch.id/__statics/gudangsoal/files/free-promo-codes-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mas.aljihad.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021-envix_GM431946152.pdfIn PDF document text
    • http://elearning.mas.aljihad.sch.id/__statics/gudangsoal/files/free-roblox-obc-codes-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mas.aljihad.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easiest-way-september-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000031bc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31BC 23400 bytes
SHA-256: 278cab1dc24542716eff2c725dfd5a7d1a9bac817b5cf9117d6e704b5546eb08
font_01_sfnt_off00006630.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6630 19116 bytes
SHA-256: c358139f3151236a08add7af93d9af1aab56cd11f8a818f293fa2f023c5d18d3

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