Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f68fab068a9738c…

MALICIOUS

PDF

37.1 KB Created: 2021-07-05 16:39:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 7dd6b92b5b49273ee51366f3f29a0229 SHA-1: d27889755d336b55a8efe34ba71fd8e166bfd033 SHA-256: 8f68fab068a9738ccd9884e508c8ab8c43f8359ac3db63dd40f769fc3832d8c5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links to malicious redirectors, specifically advertising 'Coin Master iOS Hack' and 'Robux Generator' lures. The primary redirector identified is http://netcdn.tw/app/406889139/coin-master-ios-hack-game-hack. The document body and heuristics indicate a social engineering tactic to trick users into clicking these links, likely leading to malware download or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9886

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/406889139/coin-master-ios-hack-game-hack In PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/coin-master-free-spins-gratis_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/oprewards-com-login_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/speed-hack-assassin-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/hack-script-roblox-games_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/coin-master-hack-online-cheat_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/robux-generator-no-pasword-no-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/cheat-codes-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/oprewards-login_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/free-legit-robux-apps_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3214 22708 bytes
SHA-256: 1ea80d9739090a7f4d5170a734a97755be6178c92d2c35316849b5be31de21e2
font_01_sfnt_off000064f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F9 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off00006ede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDE 18004 bytes
SHA-256: 9ff53ad4fb27c506b8f8fb38b1722763e42d939b653958544d298b579284f01c

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