Malicious PDF — malware analysis report

Static analysis result for SHA-256 902b5f73fd2a54a8…

MALICIOUS

PDF

42.1 KB Created: 2021-05-13 01:30:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 937de3323d9f4c6b2c288b3e803961ec SHA-1: b9a13a978d8515bfd9b5bea91d51004e74c2aeff SHA-256: 902b5f73fd2a54a843981b17e915d61891629d243dc8ae357556c864f82f9ac0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, leading to sites offering 'free generators' or 'game hacks'. The primary lure appears to be a 'free Robux generator' which redirects to the malicious URL. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a social engineering tactic to drive traffic to potentially malicious sites, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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/free-robux-generator-2021-no-human-verification-or-survey-game-hack In PDF document text
    • https://eyeonhimalaya.com/userfiles/files/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/kachifpro_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/earn-robux-websites_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-facebook-hack_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/minecraft-java-code-free_GM479516143.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/get-robux-com_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-attack-hack-apk_GM406889139.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_002_off00004409.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4409 25880 bytes
SHA-256: 7ad6f4340b89329f2fee1c994230eef60a99b6e983883847bf3ef9f94d86cfab
font_01_sfnt_off00007e84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E84 19556 bytes
SHA-256: 76adbda1d3e57e3064df3e292cf485a94c26c1a96e5d3a4e3c484cd1a4e129d0

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