Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8c2fee55c7f15b…

MALICIOUS

PDF

46.3 KB Created: 2021-05-14 02:40:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: fd8f7017dd312815841ebb6c3938829b SHA-1: 69e75e78633148f5ef3409cfe79323f535449adc SHA-256: aa8c2fee55c7f15b8b5d1383d552f294679c851be6c2bd90b297fd2798344bb2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for a 'GAME_HACK_REDIRECT_LURE', indicating it directs users to a site promising free game hacks. The embedded URL, 'https://netcdn.xyz/app/431946152/free-robux-without-doing-anything-game-hack', reinforces this lure. While no scripts were explicitly extracted, the PDF structure and the nature of the lure suggest an attempt to trick users into visiting a potentially malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8696

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 https://netcdn.xyz/app/431946152/free-robux-without-doing-anything-game-hack PDF link annotation
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/free-robux-images_GM431946152.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/free-roblox-money_GM431946152.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021-app_GM406889139.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004abe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ABE 25820 bytes
SHA-256: 8f23116b1fb65ab0d7ab63757164a4528d0bc2c1f630a5a0c7ecc814e052ebf1
font_01_sfnt_off00008601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8601 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off00008faf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAF 19240 bytes
SHA-256: e1e4d521198b5ef2bb2d2ba3e061f6fd747e7988b39df69dcb6ecbaf810b6a5c

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