Malicious PDF — malware analysis report

Static analysis result for SHA-256 c917f17a12387d61…

MALICIOUS

PDF

35.3 KB Created: 2021-06-30 10:35:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 14829d68f87501be3b89d2b2e00c418c SHA-1: aacc830ba07a22988410488ca17d4ad761cc533c SHA-256: c917f17a12387d61f961e06bbbe34e9e8aa38c23bf55f9e18067e2c8f1b1c1ab
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains lures for game hacks and free currency, which is a common social engineering tactic to trick users into clicking malicious links. The embedded URL points to a known malicious redirector, indicating the document's intent is to lead the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious.

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-robux-online-hack-no-human-verification-game-hack In PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/free-offsale-items-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/how-to-hack-gamemodes-in-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/gift-cards-free-roblox-march-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/free-robux-com_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/roblox-cheat-engine-66-bypass_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/how-to-get-free-robux-chrome-console_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/como-ganar-robux-gratis-sin-hacks_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/clover-online-hack-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/robux-sign_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/free-red-jacket-roblox-that-is-actually-free_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/hack-catalog-roblox-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/village-4-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/robux-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/roblox-free-bandana_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

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_off00003246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3246 22324 bytes
SHA-256: 2e95f98277cb1fb4cab5f737ac4dde68df6ca2d6a1a748c7f0b771d5a6bdd81c
font_01_sfnt_off000063f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F4 19412 bytes
SHA-256: 64b2b785101283056f0a16ab52c8fd08cfd889da7b2923e8a19fd5f7aaa4b873

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