Malicious PDF — malware analysis report

Static analysis result for SHA-256 57f7c24ca73a6da8…

MALICIOUS

PDF

35.0 KB Created: 2021-07-02 03:33:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e241fc0ea9738b6fac41db46592d36f5 SHA-1: 179899f82099c307a303da2d2807e63c556d88df SHA-256: 57f7c24ca73a6da8b8c8b9b93ca045fa3f879a3855bfd4fb54549c99209ea61c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors and further malicious PDFs, disguised as 'game hacks' and 'free item' generators. The primary lure is related to Roblox and Coin Master, aiming to trick users into downloading further malicious content. The ML classifier strongly indicates maliciousness, and the embedded URLs are known to lead to malicious infrastructure.

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.co/app/431946152/how-to-hack-on-roblox-wolf-games-game-hack In PDF document text
    • http://slim.sisminkada.net/repository/roblox-how-to-make-face-free_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-tuto-hack_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/course-obstacle-2021-roblox-cheat-code_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/hack-menu-roblox-download_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-a-free-vip-server-on-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-robux-dylan-grant_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-hack-account-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-biggest-hacks-ever-top-10_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-jailbreak-cheat-engine-codes_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-hack-2021-robux-2021-pc_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30BD 22544 bytes
SHA-256: 118b6101a597c272721e7ffd97f9af123cdc3771b5f07e9b06240ba7c25ba8ca
font_01_sfnt_off000062f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F3 19276 bytes
SHA-256: 916d0d43be336bbd0e75b8dead5ede8d7f7444283ebad3c5dcc582c49232ad15

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