Malicious PDF — malware analysis report

Static analysis result for SHA-256 98286f311b71e8e1…

MALICIOUS

PDF

47.4 KB Created: 2021-06-11 03:20:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1ec921a50bb64bbea4c1ed4ae2a70ea7 SHA-1: 94be6bada326632acf889f4b7f6a2247fa746547 SHA-256: 98286f311b71e8e1a2f3ec7197e8a8125b1d7901dbae6663493080a819d8d16b
160 Risk Score

Malware Insights

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

This PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting game hacks. The document body, though heavily obfuscated, contains references to 'hacks' and URLs that align with the heuristic findings of a malicious redirector lure. The primary goal appears to be directing users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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 https://netcdn.tw/app/431946152/how-to-create-your-own-hacks-in-roblox-game-hack In PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/robux-hack-me_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/earn-robux-websites_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-hack-no-verify_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/roblox-apk-free-download-pc_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/pubg-uc-buy-ksa_GM1330123889.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/robux-no-survey_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/pin-roblox-card-free_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/2021-fly-hack-roblox_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-cards-hack-2021_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-downgrade-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000515c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x515C 25036 bytes
SHA-256: 4749e356fe0414fb7bd139ee7be2e86c2b6ba39f16882b855f331a0f1888f6cf
font_01_sfnt_off00008ad8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD8 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_02_sfnt_off000094e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94E8 18752 bytes
SHA-256: 3bdc5765e9b34bc9d038c4011ff3b66ff9b499f2a060b1925b226abb84fc344f

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