Malicious PDF — malware analysis report

Static analysis result for SHA-256 04268181b4dc4e6d…

MALICIOUS

PDF

52.2 KB Created: 2021-06-08 11:00:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a364abc1e038316654323abe2decd575 SHA-1: 6b363a4e77dcb589ed9d5e0063aa9f091e414651 SHA-256: 04268181b4dc4e6dbb25733aea69cafd79979bcbe9595acaea42ec16d514fd4d
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 0.9464

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.tw/app/431946152/ww-roblox-cheat-us-game-hack PDF link annotation
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/_GM479516143.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/coin-master-free-spin-reward-links_GM406889139.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/coin-master-free-spins-moonactive_GM406889139.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/how-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/hack-coin-pro-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/coin-master-free-spin-no-offers_GM406889139.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/free-robux-discord_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/coin-master-card-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/coin-master-hack-mod-apk-android-1_GM406889139.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/legit-coin-master-hack-without-verification_GM406889139.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_004_off000052cc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52CC 25844 bytes
SHA-256: e1461d8608f51563a81f9421b2d5e13ba8268810383dda6df54007dbd47d4d12
font_01_sfnt_off00008f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F49 7420 bytes
SHA-256: 0b188308ab0e7ffce9913d63d697a586f2937cafc51a771db38e3a566cd37e24
font_02_sfnt_off0000a7b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7B8 18832 bytes
SHA-256: a0b69930c0096805f267b864cc8cf5d74a057225d8d0d3613a48474d70faeffb

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