Malicious PDF — malware analysis report

Static analysis result for SHA-256 e518e16a2e82942a…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 07:54:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 8fcfc25cf59e10b3f13e7f6dfeb11772 SHA-1: 2f8dbb5eba007cf9fd4fc44d9e3b9c119816adfd SHA-256: e518e16a2e82942a4c43c6e5ea4ee2d1112ffdb8cc9f4d3a03579a4e4617e853
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector domains and pages that promise free in-game currency or hacks for popular games. These links are designed to lure users to potentially malicious websites, likely for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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/431946152/roblox-inappropriate-game-hack In PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-to-get-hacks-for-roblox-fallen_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-to-use-a-loadstring-hub-roblox-hack_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-robux-survey-for-robux_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-robux-no-human-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/evidence-that-roblox-is-free-to-play_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/coin-master-32-android-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/best-roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/www-free-robux_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-robux-games_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-for-robux_GM431946152.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_off00002f97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F97 22324 bytes
SHA-256: e92a4795a84fc22610f243b69f8354414697d356515586dfff066a5526f50318
font_01_sfnt_off0000615f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615F 18888 bytes
SHA-256: 8a6ab3739a955dfff6374e8c7c02c786e32d6eeba1a58f2ec5e14e84864058eb

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