Malicious PDF — malware analysis report

Static analysis result for SHA-256 728fa38692417032…

MALICIOUS

PDF

53.1 KB Created: 2021-04-26 22:40:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 45c0f586bf0ced1917bb740c6df0704a SHA-1: 79762a27692c723a7424268ef05e4ae36dd461c9 SHA-256: 728fa386924170320bba63abf193842890d9e9239be5592975d3a274717ebed8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, with one prominently leading to a known malicious redirector infrastructure. The document body and embedded links suggest a lure for game-related cheats or hacks, likely to trick users into downloading further malware or visiting phishing sites. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9509

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/roblox-jason-mask-free-game-hack In PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-hack-a-account-password-on-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-hack-people-for-revenge-on-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-trades-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-free-roblox-cards.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-restaurant-tycoon-money-cheat-2021.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-meep-city-how-to-get-free-coins.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-hack-an-roblox-account-2021.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/como-crear-hacks-para-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-roblox-money-cheat-download.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-robux-safely-on-an-ipad-lenovo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000044ad.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x44AD 27800 bytes
SHA-256: 11dcefbde5dc26fa47ff92ace51e4b138ae64f225ba2797612208c3798eac153
font_01_sfnt_off0000850b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x850B 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off000091af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91AF 11440 bytes
SHA-256: 154d59d1680f2d1e38ccb783d6997f344290d121007e51df331726de4128c12e
font_03_sfnt_off0000acd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACD0 18708 bytes
SHA-256: 68052482cca5637b389c5e092bd6c247ac3953193ec2f1f32b944d590ad4b8c7

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