Malicious PDF — malware analysis report

Static analysis result for SHA-256 a930b0e94c4310a7…

MALICIOUS

PDF

43.6 KB Created: 2021-05-17 09:41:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0c197ffdd7356d0812ae9b143a788ac4 SHA-1: 55073f2c036ab08387c14eeff938b24ec325b6ef SHA-256: a930b0e94c4310a7c76c22ff27461ecedc0e83d9e5156a676b539ffc22510545
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and game hack lures, specifically targeting popular games like Coin Master and Roblox. The heuristic firings indicate that these links are designed to lead users to potentially harmful content or facilitate further malicious activity. While no scripts were directly extracted, the PDF structure and embedded links strongly suggest a phishing or social engineering attack aimed at tricking users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-hack-using-lucky-patcher-game-hack In PDF document text
    • http://giolantapepe.gr/images/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdfIn PDF document text
    • http://giolantapepe.gr/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://giolantapepe.gr/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://giolantapepe.gr/images/free-robux-android_GM431946152.pdfIn PDF document text
    • http://giolantapepe.gr/images/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://giolantapepe.gr/images/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://giolantapepe.gr/images/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://giolantapepe.gr/images/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://giolantapepe.gr/images/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://giolantapepe.gr/images/coin-master-freebies_GM406889139.pdfIn PDF document text
    • http://giolantapepe.gr/images/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
    • http://giolantapepe.gr/images/coin-master-computer-hack_GM406889139.pdfIn PDF document text
    • http://giolantapepe.gr/images/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://giolantapepe.gr/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://giolantapepe.gr/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://giolantapepe.gr/images/coin-master-raid-hack_GM406889139.pdfIn PDF document text
    • http://giolantapepe.gr/images/coin-master-free-spins-link-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://giolantapepe.gr/images/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://giolantapepe.gr/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://giolantapepe.gr/images/give-free-robux_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_off00004942.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4942 29232 bytes
SHA-256: 5deef783c8549e4d57304c5fbe4b0d35fdaf207ec09d3c271856fbce921372bb
font_01_sfnt_off00008695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8695 18832 bytes
SHA-256: 2cd4bfabdd56e5db7574a9ce92a7cad7f1521c02cad56c3759cae2546db8459f

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