Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5cbf1e94ae32f22…

MALICIOUS

PDF

42.3 KB Created: 2021-05-13 04:30:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 07820b5a4719fd10a1bb4d28d2787974 SHA-1: 4d628ebe49978b60c1defd36819adaf8fb8da476 SHA-256: c5cbf1e94ae32f225d73aa2dbd2c69f9d622389456865afe8bfad4312bf96f4f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to malicious redirectors, masquerading as generators for free game currency and hacks. The primary lure is for 'Coin Master Free Spins and Coins', directing users to the malicious URL https://netcdn.xyz/app/406889139/coin-master-free-spins-and-coins-link-haktuts-game-hack. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful sites, likely for ad fraud or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-free-spins-and-coins-link-haktuts-game-hack In PDF document text
    • http://emilac.com/images/how-to-get-free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://emilac.com/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://emilac.com/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://emilac.com/images/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • http://emilac.com/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://emilac.com/images/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/free-roblox-animations_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/coin-master-hack-android_GM406889139.pdfIn PDF document text
    • http://emilac.com/images/coin-master-hack-android-root_GM406889139.pdfIn PDF document text
    • http://emilac.com/images/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • http://emilac.com/images/free-printable-roblox-coloring-pages_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://emilac.com/images/roblox-games-that-give-you-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_off000049c0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C0 25088 bytes
SHA-256: 137e42a22512c6365b70151038733dee06e6ba80647c0dc18d0cf7f55fd43bd7
font_01_sfnt_off000082ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82AB 18372 bytes
SHA-256: d0160522c9507928c114f36e82183f3878c9bb5f52b4c502e96d0270f56f9c5a

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