Malicious PDF — malware analysis report

Static analysis result for SHA-256 aca9fd19c8cf8aad…

MALICIOUS

PDF

35.2 KB Created: 2021-07-04 13:40:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: df9b5564c628285302da84545c155b9b SHA-1: d13a5611c7659fcb328b7c9b357d3afbecadb9d9 SHA-256: aca9fd19c8cf8aad879fcaf56a88e1ae617395ecd180fa49cc2bd8975d48a27c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs, including one that directly links to a 'game hack' download page. The document body and heuristics indicate a lure for game cheats and hacks, suggesting the intent is to trick users into downloading potentially malicious software. No scripts were extracted from this sample, but the presence of numerous suspicious URLs points towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/479516143/how-to-download-minecraft-hacks-game-hack PDF link annotation
    • https://xiangquan.com.tw/image/data/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/pokemon-go-free-promo-codes-june-2021_GM1094591345.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-hack-robux-promo-code_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-free-robux-with-no-coupon_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-jailbreak-wiki-cheater-cage_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/is-free-robux-real_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-free-dominus-promo-code-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/nuebo-hack-de-robux-atualizasion_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-free-robux-using-codes_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/why-doesnt-my-penguin-hack-on-roblox-jailbreak-work_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-coins-for-planet-master-game_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-roblox-builders-club-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-hack-tool-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_off00003329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3329 22860 bytes
SHA-256: 0da8414b232b3032a1c2d0fe64ada7efd84663cf7444b7078c08f098fd4eef31
font_01_sfnt_off000065b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B0 18748 bytes
SHA-256: d3c6952994d6e24d3bacf5184ddbc3a45400015c11867e6fcafaa525ffd68a7f

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