Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cb45465b30618eb…

MALICIOUS

PDF

44.4 KB Created: 2021-05-10 20:11:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: dc489064a27ea0da289d122be7c507c2 SHA-1: bcee2d9d76168761fc976ee7a8d87d761449ee91 SHA-256: 9cb45465b30618eb90b3aebc831fa4c40d822edfa15f757bddf9573cbbb939ee
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free generator / game hack' and directs users to a suspicious URL. The ML classifier also flagged this PDF as malicious. The primary IOC is the external URI that likely leads to a malicious payload download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/479516143/how-to-get-minecraft-pe-for-free-ios-game-hack PDF link annotation
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/free-gifts-coin-master_GM406889139.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/coin-master-cheat-engine-hack_GM406889139.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/pasos-para-hackear-coins-master_GM406889139.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/coin-master-hack-game-download-mod-apk_GM406889139.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/mcpe-com_GM479516143.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-iphone_GM406889139.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • http://belajar.man2balangan.sch.id/__statics/gudangsoal/files/roblox-premium-free_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
font_00_sfnt_off00004ac4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AC4 24524 bytes
SHA-256: 186dc2e152967b706e8556d7468c2c926f12f17abed9bd7357b96f04e454c891
font_01_sfnt_off000081fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81FC 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008bae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BAE 18028 bytes
SHA-256: 3ef771fcdeed521b42e77c192c553d5a3bd318aced348222e5c137e62eefd75e

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