Malicious PDF — malware analysis report

Static analysis result for SHA-256 c25195c5ba04c6a2…

MALICIOUS

PDF

54.2 KB Created: 2021-06-11 01:39:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a78424206043ac23440e5007ead249cd SHA-1: c012e48de28cb121d030b285d58396a58993789b SHA-256: c25195c5ba04c6a280a326b1022f7d56e0f6771de9344bdca7a7c0879bd9b616
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks, specifically mentioning Roblox, to entice users to click on an embedded URL. This URL, 'https://netcdn.tw/app/431946152/face-made-when-roblox-was-hacked-game-hack', likely leads to a malicious site or download. The ML classifier strongly indicated maliciousness, and numerous other URLs were found within the document, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

Heuristics 3

  • 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.
  • 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.tw/app/431946152/face-made-when-roblox-was-hacked-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/tiktok-free-crunchyroll_GM835599320.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/tiktok-free-google-home-mini_GM835599320.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/pastebin-free-robux-100-works_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hack-master-coin_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-much-pokemon-go-free-account_GM1094591345.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-hack-roblox-money-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-gold_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free4now-info-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-for-kids_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50A6 29688 bytes
SHA-256: 1c8e9a20e3b13347007508f569f3987c434ca35279da72ff8847fe2a815b7b7f
font_01_sfnt_off00009535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9535 8376 bytes
SHA-256: 092b7a11ef2af93d0b61b37032e6f669359ea7bc5bcb682d43a712f599a5ca39
font_02_sfnt_off0000afff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFFF 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139

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