Malicious PDF — malware analysis report

Static analysis result for SHA-256 4306facbc16d377d…

MALICIOUS

PDF

43.2 KB Created: 2021-05-15 13:32:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cf08ce80480ff3f7f10922b93a559cf1 SHA-1: a0692817ce93160317b3f72b761d7cb0a502b76d SHA-256: 4306facbc16d377d62431fceb19ece372125b203933518ea5dfb3e2971d243f5
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as a lure for free game currency or hacks, and impersonating the Amazon brand. The primary malicious URL identified is https://netcdn.xyz/app/431946152/how-to-get-free-robux-promo-codes-game-hack. No scripts were extracted from this sample, but the embedded links and the lure suggest a credential phishing or malware distribution attempt.

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/431946152/how-to-get-free-robux-promo-codes-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/431946152/how-to-get-free-robux-promo-codes-game-hack In PDF document text
    • https://www.sitiwebjoomla.it/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/get-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/mcpe-master-free-coins_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/coin-master-hack-app-link_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/freerubux_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/freerobux-hack-us_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
font_00_sfnt_off000049d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49D4 26024 bytes
SHA-256: ce7a64ca7f88f3dd7a8537a8b4b4c6f2cfee6287601f0014453e37a32004175a
font_01_sfnt_off000084e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84E7 18872 bytes
SHA-256: 5ac59f2bbd716fa5a12c7062aef47b6358464a1e75e3d61e5fb3ce0da7ae841b

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