Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ee1a94c51cbcdd5…

MALICIOUS

PDF

45.1 KB Created: 2021-06-03 09:37:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 9fb17933db3db41e6be3502eb789e533 SHA-1: 58b73213aef778f8bd696e6aafe83a8fd70a40da SHA-256: 0ee1a94c51cbcdd5ceb40edb7020e48b31430f7299e9c396212fe44952868edb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains multiple heuristics indicating malicious redirector links, specifically luring users with 'game hack' content. The primary URL identified, 'https://netcdn.online/app/479516143/minecraft-noob-vs-pro-vs-hacker-vs-god-game-hack', is flagged as malicious infrastructure. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to trick users into navigating to a malicious site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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-noob-vs-pro-vs-hacker-vs-god-game-hack In PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/easy-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-do-you-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/pokemon-go-free-quiz_GM1094591345.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-imagine_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-ad_GM431946152.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_004_off0000550b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x550B 24984 bytes
SHA-256: 8a9c728c86bdf21a7a3a1d648cfb03976b185523527f9d2308b2b0a169250d4f
font_01_sfnt_off00008d11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D11 18500 bytes
SHA-256: 35163f059b41a7a3602679841a335cd83055ee85c0a72342166b4475486ea273

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