Malicious PDF — malware analysis report

Static analysis result for SHA-256 17507d2049cbba22…

MALICIOUS

PDF

33.8 KB Created: 2021-07-05 23:04:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: ad7b6308dd61798a9f6dff84867d1952 SHA-1: 4e2a12bb5ae7c13631eb76f5441bf2f24a59ed9d SHA-256: 17507d2049cbba22ec6aa1a043ec50a76811c889b86fbd6ecf77d4f33fb0088b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that lead to websites offering game hacks and cheats, such as 'coin-master-club-hack-game-hack'. These links are flagged as malicious redirectors, indicating a high likelihood of leading users to phishing sites or malware download pages. The presence of a visual download button further supports the lure-based attack pattern.

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/406889139/coin-master-club-hack-game-hack In PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/allahuakbar-roblox-hack_GM431946152.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/static-moonactive-net-free-spins_GM406889139.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/roblox-vampire-hunters-2-hack_GM431946152.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/coin-master-hack-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/instantrobux_GM431946152.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/how-to-get-free-robux-only-on-computer_GM431946152.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/coin-master-cards-for-free_GM406889139.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/free-face-roblox_GM431946152.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/roblox-the-pizzeria-rp-remastered-infinite-coins-hack-2021_GM431946152.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/coin-master-hack-without-verification-code_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
stream_002_off00002f0b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F0B 22396 bytes
SHA-256: 5aa9512c7cf56455b0e29eae820ef247957d7e34481ac52e03c46e1a851d48de
font_01_sfnt_off000060d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D8 18376 bytes
SHA-256: 5a95eb3d2f69f61e796dcf555f218633e102768ce47a72f053ecc396592b668a

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