Malicious PDF — malware analysis report

Static analysis result for SHA-256 45d851431482e450…

MALICIOUS

PDF

35.6 KB Created: 2021-07-09 19:34:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 5e931d5b170856813b941c7e24e40133 SHA-1: 4b6fad618dd8d7280b9ffec6362683172d848339 SHA-256: 45d851431482e450426a5b2056672f7f954bec1d05db8f28f71dfc188f0dba3b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and free generators. The document body and heuristics indicate a lure to download potentially unwanted or malicious software. No scripts were extracted, but the presence of malicious redirectors and the lure suggest a phishing or social engineering attack.

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-download-minecraft-for-free-on-iphone-game-hack In PDF document text
    • https://e-learning.man1wonosobo.online/__statics/gudangsoal/files/descargar-hack-roblox-funcional_GM431946152.pdfIn PDF document text
    • https://e-learning.man1wonosobo.online/__statics/gudangsoal/files/instant-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.man1wonosobo.online/__statics/gudangsoal/files/free-spins-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • https://e-learning.man1wonosobo.online/__statics/gudangsoal/files/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • https://e-learning.man1wonosobo.online/__statics/gudangsoal/files/coin-master-free-coins-and-spins-daily-summary_GM406889139.pdfIn PDF document text
    • https://e-learning.man1wonosobo.online/__statics/gudangsoal/files/coin-master-free-coins-and-spins-online-tool_GM406889139.pdfIn PDF document text
    • https://e-learning.man1wonosobo.online/__statics/gudangsoal/files/free-coin-master-s_GM406889139.pdfIn PDF document text
    • https://e-learning.man1wonosobo.online/__statics/gudangsoal/files/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • https://e-learning.man1wonosobo.online/__statics/gudangsoal/files/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
    • https://e-learning.man1wonosobo.online/__statics/gudangsoal/files/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://e-learning.man1wonosobo.online/__statics/gudangsoal/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://e-learning.man1wonosobo.online/__statics/gudangsoal/files/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://e-learning.man1wonosobo.online/__statics/gudangsoal/files/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://e-learning.man1wonosobo.online/__statics/gudangsoal/files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://e-learning.man1wonosobo.online/__statics/gudangsoal/files/easy-roblox-today_GM431946152.pdfIn PDF document text
    • https://e-learning.man1wonosobo.online/__statics/gudangsoal/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • https://e-learning.man1wonosobo.online/__statics/gudangsoal/files/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • https://e-learning.man1wonosobo.online/__statics/gudangsoal/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.man1wonosobo.online/__statics/gudangsoal/files/free-gear-from-games-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.man1wonosobo.online/__statics/gudangsoal/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003401.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3401 22780 bytes
SHA-256: 7153bbb93ce89be49ac2a17aa767deec95fb7a4371c58865c05e613d1209f2e1
font_01_sfnt_off000066d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D2 18920 bytes
SHA-256: 0804603b1cc23610cdbf59007cb88478a5f96776826fe68fd4f72156fde116ee