Malicious PDF — malware analysis report

Static analysis result for SHA-256 88822f67231f76a8…

MALICIOUS

PDF

47.0 KB Created: 2021-05-14 09:09:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: df8471695fde693efad0f58ec9e8f08e SHA-1: b875b8e22c5ccf863dbf744f2c1ffe9753a5d564 SHA-256: 88822f67231f76a810945bd4025f066e3b8bfb8ee381170779d60596ef54864c
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 0.8948

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/406889139/how-to-get-coin-master-card-free-game-hack PDF link annotation
    • https://belajar.mansalotim.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://belajar.mansalotim.sch.id/__statics/gudangsoal/files/coin-master-cheats-for-free-spins_GM406889139.pdfIn PDF document text
    • https://belajar.mansalotim.sch.id/__statics/gudangsoal/files/free-roebucks-no-human-verification_GM431946152.pdfIn PDF document text
    • https://belajar.mansalotim.sch.id/__statics/gudangsoal/files/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://belajar.mansalotim.sch.id/__statics/gudangsoal/files/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
    • https://belajar.mansalotim.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • https://belajar.mansalotim.sch.id/__statics/gudangsoal/files/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://www.belajar.mansalotim.sch.id/__statics/gudangsoal/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://belajar.mansalotim.sch.id/__statics/gudangsoal/files/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • https://belajar.mansalotim.sch.id/__statics/gudangsoal/files/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • https://www.belajar.mansalotim.sch.id/__statics/gudangsoal/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://belajar.mansalotim.sch.id/__statics/gudangsoal/files/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://belajar.mansalotim.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://belajar.mansalotim.sch.id/__statics/gudangsoal/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://belajar.mansalotim.sch.id/__statics/gudangsoal/files/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
    • https://www.belajar.mansalotim.sch.id/__statics/gudangsoal/files/free-robux-group_GM431946152.pdfIn PDF document text
    • https://www.belajar.mansalotim.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-today_GM406889139.pdfIn PDF document text
    • https://belajar.mansalotim.sch.id/__statics/gudangsoal/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://belajar.mansalotim.sch.id/__statics/gudangsoal/files/www-roblox-com-robux_GM431946152.pdfIn PDF document text
    • https://www.belajar.mansalotim.sch.id/__statics/gudangsoal/files/114-4-hacks_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a46.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A46 24312 bytes
SHA-256: 554a7fe90771841f087d6ec11a2baa2c4ecbd5d4ca77a0f6db4e4ff69981139c
font_01_sfnt_off000081ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81AD 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_02_sfnt_off00009638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9638 18048 bytes
SHA-256: e789d2c724ea41351e8c9ce7f7a5de89d28c485623c0379f4ca58ed4adff0f23

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