Malicious PDF — malware analysis report

Static analysis result for SHA-256 3900562f694baa67…

MALICIOUS

PDF

45.5 KB Created: 2021-06-03 04:58:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: d95b07a6669b5b2f1199ab2dc780d17a SHA-1: 28e18eca2510208c272e3a03ff196928beea6f9c SHA-256: 3900562f694baa676eff939888b0f0751981d1ecea05b4ca1d5edee50ace8dd8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical lure related to game hacks and redirects to known malicious infrastructure. The embedded URL, https://netcdn.online/app/479516143/minecraft-free-download-ipad-game-hack, is a primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or redirection attack designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/minecraft-free-download-ipad-game-hack In PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/114-4-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/tiktok-free-food-vending-machine_GM835599320.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-spins-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-spins-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-daily-rewards-link_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/easy-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • https://code.giftcards.comIn 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_004_off00005564.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5564 25240 bytes
SHA-256: c3f20246d9eaf5fac88ce111047c1551a729e62e4afac8e46d4e1e72591b7c39
font_01_sfnt_off00008eb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB4 18464 bytes
SHA-256: 277b1f8f281095ccfe68000cf594913ab5f65ed77c3843aba7451df56ad04c48

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