Malicious PDF — malware analysis report

Static analysis result for SHA-256 52f346cc08e3e88e…

MALICIOUS

PDF

34.9 KB Created: 2021-06-30 01:58:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 71658f47d8b31b9a7c51d91fb6873062 SHA-1: ab6a3d1ed95070f404f9e7076e58db711cfab631 SHA-256: 52f346cc08e3e88e589c3f38533a9d0c8dd99795d984cfb27f9c67b129188cdc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and a call-to-action phrase, luring users to download game hacks. The primary link, http://netcdn.co/app/431946152/download-roblox-free-on-computer-game-hack, suggests a malicious redirector or download site. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a social engineering tactic to trick users into downloading potentially malicious software.

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/download-roblox-free-on-computer-game-hack PDF link annotation
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/roblox-but_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-codes-without-human-verification_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/hacking-classes-for-roblox_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/fly-hack-roblox-download-2021_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/roblox-tv-free-robux_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/pokemon-go-best-free-outfits_GM1094591345.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
font_00_sfnt_off00003052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3052 21992 bytes
SHA-256: 79b8339b0757e65ff481bb3122675e45177f4425131b286101d96c673407d74d
font_01_sfnt_off0000611b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611B 19836 bytes
SHA-256: 3b10602adae98d980499f30df10169218412a62a7277f04bdb50f7597e7a2a9f

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