Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd2c16619762c743…

MALICIOUS

PDF

35.6 KB Created: 2021-06-29 00:37:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 8d1771b82623cf166645e8db096baee9 SHA-1: 2005fb459e5cab73e46ccacff6f634e596e208f5 SHA-256: cd2c16619762c7433ab1deb335ae7c27f87c804874b24aa350b07ee1ca530f38
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and generators. The document body and heuristics indicate a lure to download potentially unwanted or malicious software. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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.co/app/431946152/roblox-hack-clients-2021-game-hack In PDF document text
    • http://perpustakaan-stikesmsb.com/repository/roblox-robux-hack-2021-no-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-hack-app-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/2-player-cheat-pizza-tycoon-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-get-free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-apk-mod-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/is-roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-get-free-tix-on-roblox-high-school_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-get-10-free-robux-fpr-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off000032e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32E3 22632 bytes
SHA-256: c827697f41e007e99b670177478c7390f2ab1e4ae225f07fb32d7eb2ade14df1
font_01_sfnt_off0000655f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x655F 19280 bytes
SHA-256: aa2dcbf02b59ed6aba2656c7eed40c735825b2b910b9069415de448399b48d8a

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