Malicious PDF — malware analysis report

Static analysis result for SHA-256 ade4becccbb2be5f…

MALICIOUS

PDF

32.2 KB Created: 2021-06-17 16:28:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 86785c0c939c6098b02506947d8e861c SHA-1: d12cedd223cceb44746755f61348865a3a2f0d14 SHA-256: ade4becccbb2be5f95ccaeda13127cb2ec776707d59e5e0b1b6a182dcbcddc4c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to known malicious redirector infrastructure, specifically advertising game hacks and free in-game currency. The primary lure URL is http://netcdn.co/app/431946152/money-hack-urbis-roblox-game-hack, which is associated with a 'free generator' scam. While no scripts were extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at tricking users into visiting malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/money-hack-urbis-roblox-game-hack In PDF document text
    • https://trustindoutama.com/assets/CKImages/files/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/minecraft-free-download-android-apk-014-0_GM479516143.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/game-cheat-central-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/coin-master-free-spins-link-2021-april_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-get-robux_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/easy-robux_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/minecraft-free_GM479516143.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/minecraft-116-1-download_GM479516143.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/roblox-money-cheats-2021_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/play-roblox-free-online_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/ear-free-spins-for-coin-master_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_off00002b18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B18 21000 bytes
SHA-256: 4cf9f33495c3fe1b326f8d756c857bd3f01987a97c636174352c4e6a1545e89b
font_01_sfnt_off00005894.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5894 19152 bytes
SHA-256: 32654bca5adae14a995590134fd971d577446d89010d31517a0b634742d81a29

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