Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea828ada15a68a0f…

MALICIOUS

PDF

34.7 KB Created: 2021-07-09 23:34:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: a5d085dea57445fb5bf03a053a50e540 SHA-1: 6ae97f143d4436651ba8cb64f864d7dc7988d0e1 SHA-256: ea828ada15a68a0f047531b85b02ecaa763aae535f6398cd0ef835fc7c43fe27
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 'game hack' content. The primary link, http://netcdn.tw/app/479516143/how-to-hack-a-minecraft-server-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect the user to a site that likely hosts a secondary payload or phishing content.

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/how-to-hack-a-minecraft-server-game-hack In PDF document text
    • https://www.croatia-flyfishing.com/files/downtown-rp-script-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/coin-master-free-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/roblox-hack-2021-download_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/robux-cheat_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/how-to-hack-roblox-phantom-forces_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/pokemon-go-free-remote-raid-pass-january-2021_GM1094591345.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/coin-master-heaven-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/coin-master-tricks_GM406889139.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/how-to-get-free-robux-web_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/coin-master-mod-apk-hack_GM406889139.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/free-robux-hackget-up-to-22-500-free-robux-today_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_off00003239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3239 22540 bytes
SHA-256: 71e970b390df64d5f25c40cc378266d479e0c10377c0f0be160670fb42307a76
font_01_sfnt_off0000647e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x647E 18448 bytes
SHA-256: f1c94bc02981aac760cf80effac2d7fab2917855e343fbf4fd70c93d36576a9e

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