Malicious PDF — malware analysis report

Static analysis result for SHA-256 addf1408a740538e…

MALICIOUS

PDF

43.5 KB Created: 2021-05-12 14:40:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dc1294cea966594675d9f4de1c8d6b10 SHA-1: c46599f03b52264245f9e8d34e1ebc8c3354ca76 SHA-256: addf1408a740538e5c3458992bf5c391e1673d2f4ac3e1474ca7fb2bbcde043d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'free generator / game hack' lures. The primary redirector identified is https://netcdn.xyz/app/431946152/how-can-you-get-robux-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering tactic to drive traffic to potentially malicious sites, likely for further malware delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/how-can-you-get-robux-game-hack In PDF document text
    • https://www.vacationrentalsincroatia.com/images/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.vacationrentalsincroatia.com/images/how-to-legally-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.vacationrentalsincroatia.com/images/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.vacationrentalsincroatia.com/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.vacationrentalsincroatia.com/images/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • https://www.vacationrentalsincroatia.com/images/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.vacationrentalsincroatia.com/images/coin-master-free-coins-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.vacationrentalsincroatia.com/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.vacationrentalsincroatia.com/images/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.vacationrentalsincroatia.com/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://www.vacationrentalsincroatia.com/images/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://www.vacationrentalsincroatia.com/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://www.vacationrentalsincroatia.com/images/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://www.vacationrentalsincroatia.com/images/minecraft_GM479516143.pdfIn PDF document text
    • https://www.vacationrentalsincroatia.com/images/free-roblox-injector_GM431946152.pdfIn PDF document text
    • https://www.vacationrentalsincroatia.com/images/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • https://www.vacationrentalsincroatia.com/images/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdfIn PDF document text
    • https://www.vacationrentalsincroatia.com/images/free-minecraft-client_GM479516143.pdfIn PDF document text
    • https://www.vacationrentalsincroatia.com/images/coin-master-coins_GM406889139.pdfIn PDF document text
    • https://www.vacationrentalsincroatia.com/images/free-robux-today_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_off00004940.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4940 27344 bytes
SHA-256: aa304a39d82d42055261473adb69fbae08e3f343ac98652937f22c20979dab3d
font_01_sfnt_off000086cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86CD 18508 bytes
SHA-256: e001fb7f5401862ae7bfe8451ef812ade6eb76ff5b39a99ee1f5160965f9e068

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