Malicious PDF — malware analysis report

Static analysis result for SHA-256 f52e88871113bb30…

MALICIOUS

PDF

37.4 KB Created: 2021-06-30 07:37:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8053d6fef6bb290af7441a6e892aa0a5 SHA-1: 17c3441a98352ba119111a7189e27ab8f039b80b SHA-256: f52e88871113bb30d33516e9caf9fd82ab7ba40837302f2685836121acc6b551
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs that redirect to a known malicious infrastructure, specifically advertising game hacks and generators. The document body and heuristics indicate a lure designed to trick users into clicking these links, likely leading to further malware downloads or phishing attempts. No scripts were extracted, but the presence of malicious redirector links is a strong indicator of malicious intent.

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/cheat-cs-go-roblox-game-hack In PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/hacks-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-throw-walls-in-roblox-ith-cheat_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/what-is-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-for-xbox-1_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-com_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-get-free-robux-2021-easy-phone_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/try-minecraft-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/wurst-client_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-hack-me_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-hack-kick-gui_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/wwwrobloxcom-games-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/minecraft-mod-updater_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-free-download_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_off00003bd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3BD0 22616 bytes
SHA-256: ac2f80c0b30a4f6a437fe7080d7928ade9ab330274ec41d41de58cefa3027db5
font_01_sfnt_off00006e44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E44 18756 bytes
SHA-256: 570a83390089f7aeba1d05cee113848215687f7672c3a7127ad15273c276cf80

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