Malicious PDF — malware analysis report

Static analysis result for SHA-256 126c204df4b13710…

MALICIOUS

PDF

32.0 KB Created: 2021-06-11 07:09:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7e01a696cc0782eeb6c1e2c9c179c56f SHA-1: 3441d89e8b1b0bbfcf9caa6fccdd4cb599a2e4e9 SHA-256: 126c204df4b1371009edfe2d67b56621ce248a3027821d9854ea7bf9d34474c0
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack lure, linking to a known malicious redirector. The embedded URL and document body text both point to this lure, aiming to trick the user into visiting the malicious site. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.tw/app/431946152/cheat-for-roblox-tix-game-hack In PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/list-of-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-daily-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/tiktok-free-recharge_GM835599320.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-free-spin-reward-links_GM406889139.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/roblox-com-r_GM431946152.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/free-robux-now_GM431946152.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/crazy-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000518b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x518B 19302 bytes
SHA-256: cd326bc7adede0cc92296818fb2943e31331282a7c11459a16ce3a9a6dd2099e