Malicious PDF — malware analysis report

Static analysis result for SHA-256 c40176b08ab97a13…

MALICIOUS

PDF

52.5 KB Created: 2021-06-11 04:58:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 167361d3b46aea1bd047ff2ca5a46ea0 SHA-1: 51efd5584336506f3913c2d84d823bd11532f65b SHA-256: c40176b08ab97a13c8cc03b278c034140ea70fb4bee82f7659c70f9d7428e746
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The primary lure, 'how-can-you-hack-roblox-gamepasses-game-hack', points to a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a phishing or scam attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9586

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 https://netcdn.tw/app/431946152/how-can-you-hack-roblox-gamepasses-game-hack In PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/free-spins-coin-master-2021-glitch_GM406889139.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/roblox-fun-com-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/como-hackear-coin-master-gratis_GM406889139.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/how-can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-hacks-android_GM406889139.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/roblox-com-www_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/how-to-download-minecraft-java-edition-for-free_GM479516143.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_004_off000057d6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x57D6 27484 bytes
SHA-256: 341786e0ac3c4ba560a6cef8f05ea78021f26a3ad8fc5bc21b1df7b4cce03dce
font_01_sfnt_off00009709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9709 7272 bytes
SHA-256: f462303657ce1de10d3e7d5ae1fe17c8584116bd5bc216971166de87266da924
font_02_sfnt_off0000a87a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA87A 19084 bytes
SHA-256: 8bdf1d0db19f925bb8bde851d68f0e8a442d219f3325d8c18c66680521732218