Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c30d5ced135b2a7…

MALICIOUS

PDF

27.8 KB Created: 2021-06-03 23:07:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 649b8b492a2565f712c86f514f2530bd SHA-1: e74c6c369ce2d6c1012439f4c1dbf687bd7ab797 SHA-256: 4c30d5ced135b2a78732f18d36b4137bc813dc3e77d50864285591305d212964
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free Robux' and game hacks. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves luring the user to click on these deceptive links, which likely leads to further compromise or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 3

  • 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.
  • 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/free-robux-real-2021-game-hack In PDF document text
    • http://perpus.polimarim.online/repository/free-robux-now_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/moonactive-free-spins-link_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-make-my-own-coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/toolbox-for-minecraft-pe-ios_GM479516143.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/oprewards-points-generator_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/earnrobux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/tiktok-free-verified_GM835599320.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050a4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50A4 10890 bytes
SHA-256: 2bf97ba786255e5dda5af3fb39930c085ea5f1ca63b8357049a9ea1d2bb359b8