Malicious PDF — malware analysis report

Static analysis result for SHA-256 a96c560603ac07f1…

MALICIOUS

PDF

44.1 KB Created: 2021-05-11 00:38:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 660bd69b03bf47efa2f9afdee205042f SHA-1: 92061b89d212779eb4c2c975561626b1a8a12adc SHA-256: a96c560603ac07f1342e85a020be1fbd8d77f5a1093ae40a67ec64d56047c724
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that are disguised as links to game hacks and generators, a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URIs strongly suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/479516143/is-minecraft-earth-free-game-hack PDF link annotation
    • https://kalendarite.eu/images/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://kalendarite.eu/images/freespins-coin-master_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/hack-coin-master-online_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://kalendarite.eu/images/how-to-make-robux_GM431946152.pdfIn PDF document text
    • https://kalendarite.eu/images/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://kalendarite.eu/images/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/free-roblox-accessories_GM431946152.pdfIn PDF document text
    • https://kalendarite.eu/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://kalendarite.eu/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/how-to-get-100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4959 25088 bytes
SHA-256: b2b920c124655ee1e7efb569351a4cb8fafd2b1272efbd63fa0b41a757c3c153
font_01_sfnt_off00008135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8135 3128 bytes
SHA-256: 801f6fa60decd1add2f223f91580103c35e150c924465f86a7a572b3e00674f9
font_02_sfnt_off00008b75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B75 17736 bytes
SHA-256: 1e0abad8bc2810b5e4489737ca45e17fd168e3cfd490dec885df951617a2e0b9

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