Malicious PDF — malware analysis report

Static analysis result for SHA-256 b162f1b5beb694f9…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 19:00:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a4c0d7083882f58e47773f3f95c5d4fe SHA-1: 4bcd17a1b477cacbc71d1d9b67b241ed4495f68e SHA-256: b162f1b5beb694f9dd75e55cea7140b0eb2952c62b61f3fff3bbdc09a6ade3d5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to a known malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The presence of a visual download button and the ML classifier's high confidence score indicate a malicious intent to lure users into downloading potentially harmful content. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/game-hack-coin-master-game-hack In PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/free-roblox-intros_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/download-roblox-on-pc-for-free_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/free-spins-coin-master-without-completing-offers_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-free-spins-link-ios_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-free-online_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/free-coin-master-account_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/minecraft-windows-10-edition-free_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FAB 22656 bytes
SHA-256: e2848aa499f11ee0a511aac64ebc4d02f881aa51b30082aa9076a7367031abd4
font_01_sfnt_off00006234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6234 18264 bytes
SHA-256: 9efe2486ae0edfd787cd5e200ecf5a6ad4e76f48b1d9c09a1a4b5b4442c2c8b2

Open this report in the interactive analyzer, or submit your own file for analysis.