Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5abea335f70f81d…

MALICIOUS

PDF

46.4 KB Created: 2021-06-14 01:05:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 37ce54914fe4250d57918fe332591323 SHA-1: 8c6772389584c05186250917696b28048c48be93 SHA-256: d5abea335f70f81d6416429c8d516bf8ad72c58002befb1e8c6ce20933643db0
82 Risk Score

Malware Insights

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

The PDF document contains a lure for free game hacks and in-game currency, directing users to a suspicious URL. The ML classifier also flagged this PDF as malicious. The embedded URLs suggest a phishing or scam attempt to redirect users to potentially malicious content or download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/premium-roblox-free-game-hack PDF link annotation
    • http://library.umuslim.ac.id//repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-roblox-promo-codes-for-wing-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/robux-earning-websites_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-spins-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/ac-market-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-find-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-5-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-hakc_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/is-coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/i-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047f3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47F3 26272 bytes
SHA-256: 12c2484c8d761013e0789eff9f17dc85906c84d84641aa8f4da5dfcef401713b
font_01_sfnt_off000084cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84CD 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9174 18808 bytes
SHA-256: 5abed72073ddc0b9b6a64d6238b3ef4a80e92397ba97c30d8409656011717938

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