Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7ad7b67b2dd5f10…

MALICIOUS

PDF

41.6 KB Created: 2021-05-15 15:12:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 29ccbeea1035cc0f26643432aa36a97a SHA-1: 11b9343963e9bbd25b2acf03f953a4244945c052 SHA-256: e7ad7b67b2dd5f10fc06f130f07f578085d2a556dfa0d0f7b745e174f27c7ad5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'free generators' to lure victims. The ML classifier strongly flagged this PDF as malicious. The embedded URL 'https://netcdn.xyz/app/479516143/minecraft-hack-app-game-hack' is the primary indicator of malicious intent, likely leading to a further stage of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/479516143/minecraft-hack-app-game-hack In PDF document text
    • http://bibliodetki.ru/images/coin-master-free-spins-and-coins-group_GM406889139.pdfIn PDF document text
    • http://bibliodetki.ru/images/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://bibliodetki.ru/images/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://bibliodetki.ru/images/roblox-heroes-online_GM431946152.pdfIn PDF document text
    • http://bibliodetki.ru/images/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://bibliodetki.ru/images/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • http://bibliodetki.ru/images/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • http://bibliodetki.ru/images/roblox-free-executor_GM431946152.pdfIn PDF document text
    • http://bibliodetki.ru/images/pop-slots-free-vegas-casino-slot-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://bibliodetki.ru/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://bibliodetki.ru/images/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
    • http://bibliodetki.ru/images/coin-master-money-hack_GM406889139.pdfIn PDF document text
    • http://bibliodetki.ru/images/free-minecraft-skins-girl_GM479516143.pdfIn PDF document text
    • http://bibliodetki.ru/images/coin-master-free-spin-app-apk_GM406889139.pdfIn PDF document text
    • http://bibliodetki.ru/images/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://bibliodetki.ru/images/real-robux-codes_GM431946152.pdfIn PDF document text
    • http://bibliodetki.ru/images/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://bibliodetki.ru/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://bibliodetki.ru/images/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://bibliodetki.ru/images/easy-robux-com_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
stream_003_off000047a8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47A8 25024 bytes
SHA-256: 34a16c5ff853c31ff40f61aaaaf3920162b3b28d12e4c0a77ed3efd9ed34897b
font_01_sfnt_off00008185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8185 17912 bytes
SHA-256: 034e04b5cafc108ff4258a9a8c33ed7a0e20a1bf60bea28de924bbbe05b546ea