Malicious PDF — malware analysis report

Static analysis result for SHA-256 e52486357547130e…

MALICIOUS

PDF

41.7 KB Created: 2021-05-16 02:11:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 429fc067062425935d159dc672e1d313 SHA-1: 60572f5e955420878ef73bee6c1d9c94024c6743 SHA-256: e52486357547130ec67e6a026c1a158f598fdfb8e455e159c1fea6762497c4c9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to sites offering game hacks and free in-game currency, a common lure for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it links to a game hack redirector. No scripts were extracted, but the document body and heuristics suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-claim-spins-game-hack PDF link annotation
    • https://deutsch-study.com/image/data/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-hack-no-verification-ios_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-fan-page_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-robux-meme_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-free-spin-and-coins-links-home_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-spin-card-exchange-coin-master_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/is-coin-master-free_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/cm-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-robux-real_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
stream_003_off000049cf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49CF 24524 bytes
SHA-256: abc5de6c00ca6bf7fae76e3cf976babf7d7971e7f892e41f35e87d9020403861
font_01_sfnt_off00008168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8168 18056 bytes
SHA-256: 910bba4e9b8698471f084902004854848b7ccdb185fd175879c14395f4b2f674

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