Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6741a8a0cbc8470…

MALICIOUS

PDF

41.8 KB Created: 2021-05-15 13:18:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: acfac111aa7b4267238ef7aa28883544 SHA-1: cf20226e70b3a2b64d90fbf2047b0f1111d9fe6c SHA-256: e6741a8a0cbc84704c8cf6127bd5854351ee49d6efe2916c5f2b015fb1669891
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs and a document body that explicitly advertises game hacks and free currency generators for popular mobile games like Coin Master and Roblox. The heuristic firings confirm these links point to external resources, likely serving as lures for phishing or malware distribution. Although no scripts were extracted, the presence of numerous game-related lures and the ML classifier's high confidence suggest a malicious intent to redirect users to potentially harmful sites.

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/how-to-get-free-spins-on-coin-master-hack-game-hack PDF link annotation
    • http://playmoorecello.com/images/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://playmoorecello.com/images/coin-master-card-collection-hack-apk_GM406889139.pdfIn PDF document text
    • http://playmoorecello.com/images/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://playmoorecello.com/images/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://playmoorecello.com/images/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://playmoorecello.com/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://playmoorecello.com/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://playmoorecello.com/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://playmoorecello.com/images/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://playmoorecello.com/images/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://playmoorecello.com/images/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://playmoorecello.com/images/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • http://playmoorecello.com/images/weird-roblox_GM431946152.pdfIn PDF document text
    • http://playmoorecello.com/images/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://playmoorecello.com/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://playmoorecello.com/images/roblox-game-free-download_GM431946152.pdfIn PDF document text
    • http://playmoorecello.com/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://playmoorecello.com/images/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://playmoorecello.com/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://playmoorecello.com/images/coin-master-hacksco_GM406889139.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_off00004708.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4708 25184 bytes
SHA-256: 87009324e45738b9ab12341d59f5916356bbeb07be89250ff83e7cfe411bb18e
font_01_sfnt_off0000812a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x812A 18220 bytes
SHA-256: b9590c860e10d8f9c020beecb5b6ba48e280dd1fb7308b582b518c7b33ada2d7

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