Malicious PDF — malware analysis report

Static analysis result for SHA-256 482d7ee47af648d1…

MALICIOUS

PDF

34.0 KB Created: 2021-07-09 07:21:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: a94e368d4ed5a73d36240d541da10a1b SHA-1: 8dc172755a1ebf697bd88a8ba89258aa8bce8973 SHA-256: 482d7ee47af648d1ee796d1daea9ea4e83ab55195f703736bc572fc08f9999c3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a game hack or free generator. The primary link, http://netcdn.tw/app/406889139/2021-free-spins-on-coin-master-game-hack, is identified as a malicious redirector. The document body and embedded URLs suggest a phishing or scam attempt related to in-game currency or cheats. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/2021-free-spins-on-coin-master-game-hack In PDF document text
    • https://tena-g.hr/files/como-tener-robux-hacks_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/noob-vs-pro-vs-hacker-roblox-bee-swarm-simulator_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/roblox-cheats-for-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/coin-master-free-spins-whatsapp-link_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/are-there-fe-free-games-roblox_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/a-game-were-you-can-get-free-robux-roblox_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/roblox-promo-codes-free-2021_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/descargar-hacker-de-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/roblox-hack-booga-booga-download_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/roblox-free-robux-copy-paste_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/how-to-put-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/roblox-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/apk-hack-de-roblox_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/free-roblox-outfits-2021_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
font_00_sfnt_off00003055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3055 22116 bytes
SHA-256: 001214f31bec8675728b8e987e673009c670233db9c177557cbc2e34374b707d
font_01_sfnt_off00006131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6131 18576 bytes
SHA-256: f2fff24d8e1da03e7950bb9f46a8814e1d67753a91814bc950e94c645bcd301c

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