Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d7128100878fb23…

MALICIOUS

PDF

34.9 KB Created: 2021-07-04 16:39:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 41564c2eabdb7d937ec2cfc2ec2ea247 SHA-1: aac56130fab54a836e3d6dfda229e957bcf5073f SHA-256: 8d7128100878fb236e17f316113ddd509ee433b26ecc7c541bde40eaff7f8b67
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free in-game currency. The primary URL, http://netcdn.tw/app/479516143/minecraft-pe-017-0-apk-free-download-android-game-hack, is identified as a malicious redirector. The document body and heuristics indicate a social engineering tactic to trick users into visiting these sites, likely for malware distribution or further phishing.

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.tw/app/479516143/minecraft-pe-017-0-apk-free-download-android-game-hack In PDF document text
    • http://ggmtc.net/userfiles/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/roblox-shirts-and-pants-free_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/super-power-training-simulator-roblox-script-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/cheat-roblox-elemental-wars_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/comment-avoir-des-robux-sans-hack_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/get-free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/infinity-heroes-roblox-hack_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/roblox-printables-free_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/pokemon-go-free-unblocked_GM1094591345.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-to-win-robux_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/what-is-exploiting-in-roblox_GM431946152.pdfIn 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
font_00_sfnt_off000031e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E8 21940 bytes
SHA-256: 89757c9898914c912640b3459dfaeef7b09b437a5b7a3faf1ed684db5a102024
font_01_sfnt_off00006224.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6224 19412 bytes
SHA-256: 98bc5863a2ef94ee9cd00eb8fcbf6f31283247a252703102005365b742523eb0

Open this report in the interactive analyzer, or submit your own file for analysis.