Malicious PDF — malware analysis report

Static analysis result for SHA-256 a452b9af09577c5b…

MALICIOUS

PDF

41.4 KB Created: 2021-05-12 13:29:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: afc5c5797d1496bfb7dbaa6b2425af71 SHA-1: d5c75fd62992b1eec1f99738c8097762326ab37f SHA-256: a452b9af09577c5b401a95fd1bb6ffe4c6862779e8965950742976df34dde921
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one to a known malicious redirector, disguised as a lure for free game currency. The document body and embedded URLs suggest a phishing or scam attempt to direct users to potentially harmful websites. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/codes-to-get-free-robux-game-hack In PDF document text
    • http://shiny-nn.ru/images/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://shiny-nn.ru/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://shiny-nn.ru/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://shiny-nn.ru/images/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://shiny-nn.ru/images/spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://shiny-nn.ru/images/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://shiny-nn.ru/images/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://shiny-nn.ru/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://shiny-nn.ru/images/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • http://shiny-nn.ru/images/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://shiny-nn.ru/images/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://shiny-nn.ru/images/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://shiny-nn.ru/images/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://shiny-nn.ru/images/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://shiny-nn.ru/images/roblox-verification_GM431946152.pdfIn PDF document text
    • http://shiny-nn.ru/images/robux-sites_GM431946152.pdfIn PDF document text
    • http://shiny-nn.ru/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://shiny-nn.ru/images/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://shiny-nn.ru/images/coin-master-free-spins-and-coins-generator_GM406889139.pdfIn PDF document text
    • http://shiny-nn.ru/images/how-many-levels-does-coin-master-have_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_off0000456d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x456D 25752 bytes
SHA-256: 0662cb26919452aa5feac20cf27800dd87ce1802dc19637d4224104da57350e0
font_01_sfnt_off00007f6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F6F 18292 bytes
SHA-256: c4e16f213ba515826b0fc8bd2adb9a42249615e2a7fe5232f5ebe2d4ec6172c1

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