Malicious PDF — malware analysis report

Static analysis result for SHA-256 14d5e4da836404be…

MALICIOUS

PDF

44.9 KB Created: 2021-06-03 20:01:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 1c5638a6b0da4a95e8ad2236b423d6ed SHA-1: 6a758bf2b6907f3758d7d20ea92f72309f1f4be6 SHA-256: 14d5e4da836404be8465a0e7de16183279db566f1a488f841286b9b5c1c43349
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, including a known malicious redirector at `https://netcdn.online/app/431946152/how-to-hack-people-in-roblox-game-hack`. The document body and heuristics indicate a lure related to game hacks and free items, suggesting an attempt to trick users into visiting these sites. The presence of numerous links to other PDF files, also related to game cheats, indicates a link farm designed to drive traffic to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/431946152/how-to-hack-people-in-roblox-game-hack In PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/free-admin-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/fake-robux-codes_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/coin-master-real-free-spins_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/free-roblox-toys_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/how-to-get-free-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/mangocheats-com-hack-coin-master-cheat_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/free-coin-spin-daily-link-coin-master_GM406889139.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_off00005126.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5126 25564 bytes
SHA-256: a1f2fafa47b9b209655a6be024f4589f3b3c7083d8b5a4f364398db25e979370
font_01_sfnt_off00008bcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BCB 18676 bytes
SHA-256: 10ff19610ec10ba06ce370fdc76468137d93ed174f58c2f80433e0d310d8c060

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