Malicious PDF — malware analysis report

Static analysis result for SHA-256 b776d74752f431e6…

MALICIOUS

PDF

34.8 KB Created: 2021-06-28 03:48:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: cdafa98e08a3fa7bb5bb2add808b31a9 SHA-1: 4c946312a126f02b63246894d09f9621e20c24e2 SHA-256: b776d74752f431e64458f67d37c0c52461f4513fd9abca9a62b5a9355e205325
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a lure related to game hacks and generators, directing users to a known malicious redirector URL. This suggests a social engineering attack aimed at tricking users into visiting a compromised site. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure strongly indicate a malicious intent to redirect users to potentially harmful content.

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.co/app/431946152/roblox-its-free-music-id-game-hack In PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-free-spins-link-ios_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-refunds-for-roblox-site_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-hack-roblox-retail-tycoon_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-group-fund-robux-free_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-big-head-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-free-robux-for-doing-nothing_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/wurst-download_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-hack-tools-in-the-game-no-mega-android-tutorial_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-ninja-animation-free-download_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-jailbreak-account-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-how-to-make-a-free-admin-game_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/5-dollar-roblox-gift-card-free_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-use-money-hack-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/framed-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/fistacuffs-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-a-free-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000312c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x312C 22092 bytes
SHA-256: c4fae3014b4c1c966a1573c4135bea4760de2a1f91a12ebe46a0fc892d160d3a
font_01_sfnt_off0000623f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x623F 19384 bytes
SHA-256: bffef444ac0c5104b4858b7e72057c531f54aa1889a85ab47f073c349f3f46a6

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