Malicious PDF — malware analysis report

Static analysis result for SHA-256 376cf52eafb5be07…

MALICIOUS

PDF

40.9 KB Created: 2021-05-13 02:30:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4b6eb2b124968192643a1a72ac27367e SHA-1: 23626f5d2cf2dbf239db9329594af69dac56522c SHA-256: 376cf52eafb5be07f4ada93c515ab82811aa7a70ef956253b1f978024b5bf25a
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors and impersonates Facebook to lure users into clicking. The primary link, https://netcdn.xyz/app/406889139/coin-master-free-spins-link-game-hack, is presented as a 'free generator / game hack' and a 'download now' call-to-action. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to exploit users via social engineering and redirect them to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/406889139/coin-master-free-spins-link-game-hack.
  • 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-link-game-hack In PDF document text
    • http://sexythings.gr/images/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://sexythings.gr/images/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • http://sexythings.gr/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://sexythings.gr/images/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://sexythings.gr/images/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://sexythings.gr/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://sexythings.gr/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://sexythings.gr/images/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://sexythings.gr/images/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sexythings.gr/images/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://sexythings.gr/images/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://sexythings.gr/images/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • http://sexythings.gr/images/free-coin-spin-daily-link-net_GM406889139.pdfIn PDF document text
    • http://sexythings.gr/images/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://sexythings.gr/images/robux-premium_GM431946152.pdfIn PDF document text
    • http://sexythings.gr/images/coin-master-free-spin-app-reviews_GM406889139.pdfIn PDF document text
    • http://sexythings.gr/images/how-to-give-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://sexythings.gr/images/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://sexythings.gr/images/free-roblox-accounts-that-work_GM431946152.pdfIn PDF document text
    • http://sexythings.gr/images/coin-master-free-spins-link-today-new_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_off000047cf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47CF 23744 bytes
SHA-256: 0ae6113c29c306a9e6127a65b1a9ad327a0a14e8b4195bef11320ef725945426
font_01_sfnt_off00007e06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E06 18056 bytes
SHA-256: a4f33549350803e8a819cbfad6b4ff3cdc0b302ceab74af9f2f663eab6bd9ec0

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