Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c76e1f85b340fe4…

MALICIOUS

PDF

46.4 KB Created: 2021-06-04 03:42:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a300fa536a8742b8302607d876c114ec SHA-1: 0982618c329eb607881d12c61baa9f090b11cccc SHA-256: 3c76e1f85b340fe465d9fd0f519f6e7cfe12baf33e148286629c6d2441b82c8e
200 Risk Score

Malware Insights

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

This PDF document contains multiple links to known malicious redirectors and impersonates Microsoft to lure users with 'free generator / game hack' content. The embedded URLs suggest an attempt to drive users to potentially malicious websites for credential harvesting or further payload delivery. No scripts were extracted, but the document structure and heuristics strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.online/app/479516143/minecraft-tiktok-hacks-game-hack.
  • 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.online/app/479516143/minecraft-tiktok-hacks-game-hack In PDF document text
    • http://pustaka.bbppketindan.info//repository/pokemon-go-free-legendary-pokemon_GM1094591345.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-do-you-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/mcpe-optifine_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/hack-coin-master-nyc_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-hack-coin-master-spin_GM406889139.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_off00005256.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5256 24720 bytes
SHA-256: fc8b03867d6e6e1d1cd4a06540ce0ab7e204b0666db1c9a8a86008ccf279ec57
font_01_sfnt_off00008a3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A3C 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off000093ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93EF 17880 bytes
SHA-256: d5bc1f00134bcbca17edb073a38cf34a4b8369625bcb3a8e6d2c090e6dde0fec

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