Malicious PDF — malware analysis report

Static analysis result for SHA-256 94bf556e4648a794…

MALICIOUS

PDF

35.3 KB Created: 2021-07-06 03:39:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 86f0d186570729cee590d5ffdbc0aa7e SHA-1: 0b07993278fd702ccc5241af22514d163c4d641e SHA-256: 94bf556e4648a794247e105a887abc35cf8e18061fc143c5b59f5dba1a4042e2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as "free generator" or "game hack" lures. The primary link directs to a site promising free spins for Coin Master, which is a common social engineering tactic. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent, likely leading to further malware downloads or phishing pages.

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/free-spin-coin-master-twitter-game-hack In PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-cheat-engine-cheats_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-get-free-roblox-items-usuing-android_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/descargar-roblox-hack-robux-pc_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-mad-city-hack-money-francais_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/get-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/ghow-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/appsmob-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-change-your-roblox-password-when-you-are-hacked_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-hack-roblox-items-on-to-your-account_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-hack-tool-ios_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/dexen-hack-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/can-you-play-minecraft-for-free_GM479516143.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_off00002fa4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FA4 24680 bytes
SHA-256: b046a588ed892af167cbcd48a67d15d2638bda20660241ce48943d2ab7b99983
font_01_sfnt_off00006721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6721 18336 bytes
SHA-256: dbab6a80daafa71f1e061f75c0d82e12a0e9023e308b0b95e4f6d3b99741e995

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