Malicious PDF — malware analysis report

Static analysis result for SHA-256 e510af46b5a77ff4…

MALICIOUS

PDF

33.0 KB Created: 2021-07-01 16:31:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 53a3d44426aeed36454d15d6f174bc53 SHA-1: 5e9c54931fa41b7e50599b570d8446d734b4bd7c SHA-256: e510af46b5a77ff422555e92a5d29f74ceaad7563b7f9dc38d7e930e0ce36da0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure related to 'free game hacks' and 'free accounts', directing users to a suspicious URL. The ML classifier also flagged this PDF as malicious. The primary IOC is the external URI pointing to a potential phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/roblox-free-accounts-may-2021-game-hack PDF link annotation
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/codes-roblox-pants-hacker_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/roblox-generator-com_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/free-headless-horseman-roblox-pastebin_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/good-outfits-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/can-i-get-free-robux_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
font_00_sfnt_off00002c1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1A 21184 bytes
SHA-256: 63e0175ecad024abad464fd76a4c94fa31b30ec9e2524fa5332b5a9bf035b472
font_01_sfnt_off00005a2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A2F 19672 bytes
SHA-256: 380622fe7e1229c996a684b1e79491d3852c052cefe577a230ab36d58eb4e245

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