Malicious PDF — malware analysis report

Static analysis result for SHA-256 693813e5ba207321…

MALICIOUS

PDF

45.9 KB Created: 2021-05-13 17:32:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: dc2d93e8669941ff1726a2e0a3728080 SHA-1: fbe62ed3500b810bcf34b8ed21e6e63340fd4cd7 SHA-256: 693813e5ba207321768140e0ba0eea08cd7e211c77a3d78db7bb6817b36e9627
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting "game hacks" and generators. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-vip-hack-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a lure for potentially harmful content, likely delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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-vip-hack-game-hack In PDF document text
    • https://www.gymun.cz/images/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/minecraft-com-free_GM479516143.pdfIn PDF document text
    • https://www.gymun.cz/images/coin-master-hacks-to-get-spins_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • https://www.gymun.cz/images/how-to-hack-coin-master-game-2021_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/2021-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/coin-master-game-hunter_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/get-more-free-spins-on-coin-master_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
stream_003_off000047d8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47D8 27644 bytes
SHA-256: e565adb259bd6402815085495bea2a011ac52ed9a10fa8b1946c44459d11da45
font_01_sfnt_off000086a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A6 3204 bytes
SHA-256: 8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa
font_02_sfnt_off000091aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91AA 18028 bytes
SHA-256: 3946bb02aaa81310583f7a83aaa835a1d417c23958a40c8f2d44bc67edab2b14

Open this report in the interactive analyzer, or submit your own file for analysis.