Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4ae557d72b3f794…

MALICIOUS

PDF

34.9 KB Created: 2021-07-04 11:13:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 96538ab389d6ceb6bca7334da1b023cf SHA-1: 3b795eba365a8ed46e966b676685b5f6a1d7c4a8 SHA-256: a4ae557d72b3f79488a1975367580e3bac01fa211721019d97a36935a1b19615
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that are designed to lure users into clicking on links related to game hacks and generators. The primary URL, http://netcdn.tw/app/406889139/coin-master-hacks-game-hack, is flagged as a game hack redirector. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a phishing or social engineering attack aimed at driving traffic to malicious sites.

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.tw/app/406889139/coin-master-hacks-game-hack PDF link annotation
    • http://gts.edu.gh/library/repository/roblox-account-hacking-program_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/real-robux-generator_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/copy-paste-bin-1million-free-robux-script_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-injector-free_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/youtube-the-coolunique-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-get-free-robux-on-roblox-with-builders-club_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-mast-hacks_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-shenanigans-mod-cheat-codes_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-on-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-downlod_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-get-free-skins-in-counter-blox-roblox-offensive_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/code-cheat-roblox-pokemon-brick-bronze_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spin-and-coin-link-haktuts-hacking-news_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_off0000319e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x319E 23532 bytes
SHA-256: 05a1ec4924be7bc4d810d64fef8741506a9b17c922e571e09bcd0f6839766994
font_01_sfnt_off000066a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66A0 18004 bytes
SHA-256: 2f3a5855c5bac228d8d27cc7f61b57eebad79d58a924e470a0477843dff273c7

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