Malicious PDF — malware analysis report

Static analysis result for SHA-256 472e8f03c48dcb9b…

MALICIOUS

PDF

45.1 KB Created: 2021-05-16 12:39:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a4b7df845c0300cc4c53f8ac7c67acc0 SHA-1: 2fd672ac08b8383bef4eaa763fdfcc020b525430 SHA-256: 472e8f03c48dcb9bdbeea1d01bfe67f84eb21f20702b82c4c106cad1d7f4b866
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, including one that masquerades as a 'free generator / game hack' for Minecraft. The document body, though heavily obfuscated, contains references to these lures and the primary malicious URL. The presence of these links and the heuristic firings strongly indicate a social engineering attack aimed at tricking the user into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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.xyz/app/479516143/minecraft-hacks-for-2b2t-game-hack In PDF document text
    • http://gaec.cl/images/how-to-download-wurst_GM479516143.pdfIn PDF document text
    • http://gaec.cl/images/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://gaec.cl/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://gaec.cl/images/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://gaec.cl/images/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://gaec.cl/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://gaec.cl/images/coin-master-time-hack-ios_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/coin-master-hack-tool-apk-download_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://gaec.cl/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://gaec.cl/images/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/minecraft-114-4-download-free_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_003_off00004b32.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B32 24872 bytes
SHA-256: 30520edf8b3601bbe605d65f3741908cd90f171fbbea7d31d1e50dc10677c13a
font_01_sfnt_off000083b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B7 2968 bytes
SHA-256: 1704c160ebddd6cbe58ae8b5dd575abd84b56f247227288c1891e836ec65423e
font_02_sfnt_off00008e04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E04 18160 bytes
SHA-256: 73267fa38c33df4564edc3a3b7a93aff63814ff24459d3fbeea14b28dd6d54e0

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