Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa895088a77561a0…

MALICIOUS

PDF

45.0 KB Created: 2021-06-03 13:57:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3eea89d2cbbe99bd2c8c056f48370d39 SHA-1: 16dba02b38a3d65a86f842735c029f126640a1bf SHA-256: fa895088a77561a0e92e1cd1b8d8f29651d7254e86b7edc66d191f49920c616d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, disguised as a "Minecraft Tower Defense Hacked" generator. The ML classifier also flagged this PDF as malicious. The primary lure appears to be a game hack, which is a common social engineering tactic to trick users into visiting malicious sites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/479516143/minecraft-tower-defense-hacked-game-hack In PDF document text
    • https://library.fdk.ac.id/repository/games-like-minecraft-but-free_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/body-roblox_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-official-page_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/reddit-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-minecraft-account-list_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-draw-roblox_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-free-followers-and-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://youtuIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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
stream_004_off0000528e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x528E 26060 bytes
SHA-256: edafc4e873718a6affc48de78d0d8b4533cf1ffe46a0e7e517af50b635e037da
font_01_sfnt_off00008d03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D03 18388 bytes
SHA-256: 713945c209eafdfb17d9348275aac2514e7231b3ac112b5af91dabd48964bc5b

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