Malicious PDF — malware analysis report

Static analysis result for SHA-256 10b4f7c9dbe377f9…

MALICIOUS

PDF

42.6 KB Created: 2021-05-17 07:00:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 868fd2012b602b4c3c8371312fd28b80 SHA-1: 1f25ef0db1b00c4f2ae4bdcf29c9d6854343ed05 SHA-256: 10b4f7c9dbe377f966fd8c2b532a96ab87307b167baeb44dfeb77e5c1cb958ed
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple external links, with a primary lure pointing to a 'free generator / game hack' website. This suggests a social engineering tactic to redirect users to potentially malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded links indicate a malicious workflow designed to trick users into visiting compromised or scam-related URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/rbx-land-free-robux-game-hack PDF link annotation
    • https://i-photo7.com/image/data/files/coin-master-freebies_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/minecraft-free-install_GM479516143.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/113-hacked-client_GM479516143.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/roblox-place-rewards_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-clothing-on-roblox_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
stream_003_off00004aab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AAB 24796 bytes
SHA-256: bb7c65d24d49b29bc888125ecc0fff4b7d4044b5e0ceb48b4bb9458a265b3672
font_01_sfnt_off000083c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C4 18416 bytes
SHA-256: ed1846d837a30ccb27e25bdb955d82aabb746909bdcfb120b1e9cc4e6290fa01

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