Malicious PDF — malware analysis report

Static analysis result for SHA-256 92a06d0111ca068c…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 23:23:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 2f434001c560e8aca1a419e39894559d SHA-1: af7e40dd803b2737bdac4ac197c9db5f02b51f70 SHA-256: 92a06d0111ca068c3c60c3eb0d042abc8ec0f87086ddbd272f9e26acdf51d70a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as "free generator" or "game hack" lures. The primary redirect URL is http://netcdn.tw/app/479516143/can-i-get-minecraft-for-free-game-hack. The document body and embedded URLs suggest a phishing attempt related to popular games and virtual currency. No scripts were extracted, but the presence of malicious links indicates a likely attempt to lead the user to a compromised site or download further malware.

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.tw/app/479516143/can-i-get-minecraft-for-free-game-hack In PDF document text
    • http://library.acehresearch.org/repository/free-robux-donation_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-get-free-vip-in-fashion-famous-roblox_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-get-a-dominus-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-free-gift-card-org_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-hack-no-hassle-free_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/redeem-code-roblox-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/can-you-cheat-to-get-money-on-bloxburg-roblox_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-roblox-catalog-items-2021_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/reversal-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/what-is-a-robux_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-virtual-item-codes-free_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/sword-fighting-roblox-game-free-to-copy_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
font_00_sfnt_off00003375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3375 22364 bytes
SHA-256: 918d53f2aacf957385f12f76c1eafee3cf3a43214d8021c49e37c0b2fca819ea
font_01_sfnt_off000064d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D9 17996 bytes
SHA-256: e6fcd10c978a651d981c94814daa7d4c9dc519d22899a404f27347f868a504f2

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