Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e1ef51080a58cf0…

MALICIOUS

PDF

43.6 KB Created: 2021-05-14 15:26:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1a5d4494253e0f8229e59faab76e43e8 SHA-1: 2bc73d0bb0e767da6444dab9b191f045942d7b5b SHA-256: 8e1ef51080a58cf0c72a918d6bf976a971d93b832e232826b4029136abd5ed96
200 Risk Score

Malware Insights

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

The PDF contains multiple links that redirect to malicious infrastructure, impersonating brands like Facebook to lure users into clicking. The heuristic firings indicate this is a credential phishing attempt disguised as a game hack generator. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a malicious workflow designed to lead the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/coinmaster-spin-ml-free-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/coinmaster-spin-ml-free-game-hack In PDF document text
    • http://ivalor.fr/images/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://ivalor.fr/images/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://ivalor.fr/images/coin-master-hack-tuts_GM406889139.pdfIn PDF document text
    • http://ivalor.fr/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://ivalor.fr/images/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://ivalor.fr/images/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://ivalor.fr/images/coin-master-free-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://ivalor.fr/images/minecraft-client_GM479516143.pdfIn PDF document text
    • http://ivalor.fr/images/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • http://ivalor.fr/images/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://ivalor.fr/images/2021-roblox_GM431946152.pdfIn PDF document text
    • http://ivalor.fr/images/coin-master-deals_GM406889139.pdfIn PDF document text
    • http://ivalor.fr/images/roblox-18_GM431946152.pdfIn PDF document text
    • http://ivalor.fr/images/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://ivalor.fr/images/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ivalor.fr/images/free-robux-place_GM431946152.pdfIn PDF document text
    • http://ivalor.fr/images/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • http://ivalor.fr/images/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://ivalor.fr/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://ivalor.fr/images/free-minecraft-account-and-password-generator_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a70.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A70 29696 bytes
SHA-256: 70b4b1d0916db54013d2b1cfaadafbe98fb22b60d57f2cd4497e7618a9f0a480
font_01_sfnt_off000088a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88A8 18220 bytes
SHA-256: 650e8f71a1b9292b8308c8990560b3515b162e3aa2d6bcbd8521e639c6c382b1

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