Malicious PDF — malware analysis report

Static analysis result for SHA-256 50659d74ee623d50…

MALICIOUS

PDF

34.6 KB Created: 2021-07-01 20:37:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7a213416e70488d3905b97559795b003 SHA-1: 52220126282ee43d5dd08bab400a759369787e1e SHA-256: 50659d74ee623d50a9fbb056016a1768dbe6f729c89eb0c0f1c00114e4255127
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites promising free in-game currency and hacks, a common lure for phishing or malware distribution. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this malicious intent. While no scripts were explicitly extracted, the document's structure and embedded URLs suggest it is designed to redirect users to potentially malicious sites, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/how-to-get-20210-robux-for-free-2021-game-hack PDF link annotation
    • http://pustaka.ust.ac.id/repository/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-make-a-developer-product-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-unlimited-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-cheats-keine-kontrolle_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/bug-free-uniform-of-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-hack-item-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-hack-all-faces-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/pubg-uc-price_GM1330123889.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-free-play-deathrun_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/robux-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-roblox-levle-6_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-instakill-npc-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/haktuts-coin-master-free-spin-link_GM406889139.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002eff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EFF 22524 bytes
SHA-256: c70969a222437796d089206442d79f467822b0922c9c9890400070503b1e5a21
font_01_sfnt_off00006104.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6104 19384 bytes
SHA-256: d24c0e100c944da15398cc03dd439e143cfc9f9497013523985f2333f6259ff5

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