Malicious PDF — malware analysis report

Static analysis result for SHA-256 93185ff23ad9779b…

MALICIOUS

PDF

34.9 KB Created: 2021-06-19 04:47:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c2c2d1aa3401d71d690ab9ee65c50523 SHA-1: 30dbe1d510109c87956140dc697d09ecaaca6124 SHA-256: 93185ff23ad9779ba04906ec58b5cc151fe4fdf7a1629e7888e788b1e70cff36
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The primary link identified is http://netcdn.co/app/431946152/free-roblox-game-card-code-generator-game-hack, which is flagged as a malicious redirector. The document body and numerous URLs suggest a social engineering attempt to trick users into visiting potentially harmful sites, likely for credential harvesting or malware delivery.

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/free-roblox-game-card-code-generator-game-hack In PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/coin-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/free-coins-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/minecraft-pocket-apk_GM479516143.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • https://www.mtsn1siak.com/__statics/gudangsoal/files/free-robux-2021-april-wow_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/need-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/exploit-roblox-free_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/free-robux-working_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003105.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3105 22388 bytes
SHA-256: d71b2195b10a315c3fefefd591bef3f0f76d568558d5f36be5234d86aabfb394
font_01_sfnt_off00006308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6308 19188 bytes
SHA-256: 757bc05ce803b4005e4eb2c658ce1e6c0b7214fcaaa1d9b19da03e42c1b9ff18

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