Malicious PDF — malware analysis report

Static analysis result for SHA-256 77e7586aec14a568…

MALICIOUS

PDF

47.2 KB Created: 2021-06-03 09:37:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: b23401b367f16a3d003d7c7521595edb SHA-1: ba1d85b0a942c8c03b9ac6f3bbc9420e844d6a05 SHA-256: 77e7586aec14a568328a2dff748ed7745000eccbd8fb50918061cca3653666ee
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising "game hacks" and free generators. The primary malicious URL identified is https://netcdn.online/app/479516143/can-you-play-minecraft-for-free-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a social engineering lure designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/479516143/can-you-play-minecraft-for-free-game-hack In PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/coin-master-daily-gift-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/best-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/dailyrobux_GM431946152.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/free-coins--spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/how-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/free-roblox-hack_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
stream_004_off0000548e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x548E 25240 bytes
SHA-256: d3f7d59ba9b06f9597ac81631c09a944af8dd660443cdb6c3e68380d1e1a3803
font_01_sfnt_off00008be8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BE8 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off00009588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9588 18420 bytes
SHA-256: 81bede04d90c080fa29d20db124f1531358f39ee91ce610139dedd08dc3401fc

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