Malicious PDF — malware analysis report

Static analysis result for SHA-256 55468f13e3df0bbc…

MALICIOUS

PDF

37.6 KB Created: 2021-07-06 13:19:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f6d93cb7c5441ad28a6a67b83cf07280 SHA-1: db3aaa5f69446ffb85c54bf63fa5e4488074cf29 SHA-256: 55468f13e3df0bbcff2f66053c659dbd7522567a6b8959cc00df8150eb5cff3f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, specifically advertising a 'free generator / game hack'. The document body and embedded URLs reinforce this lure, directing users to potentially malicious sites. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9886

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 http://netcdn.tw/app/406889139/200-free-spins-coin-master-game-hack In PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-hack-murder-mystery-2_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/appsmob-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/is-minecraft-free_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/pokemon-go-free-codes-november-2021_GM1094591345.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/avatar-hacker-en-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-rovive-free_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-creepy-elevator-hack-script_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-999m-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/afk-hacker-roblox-wds_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-a-dominus-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-apk_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/pubg-uc-price_GM1330123889.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-free-spins-2021-generator_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-bank-tycoon-free-vip_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-robux-obby-june-2021_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-free-boy-hair-not-model_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-hack-injector-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003392.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3392 22432 bytes
SHA-256: 19a8c3c59f55f10a5d405e882972e1d43605df53397c0712b4b14b147f990af2
font_01_sfnt_off0000658b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x658B 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off00006f70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F70 18472 bytes
SHA-256: 9bbada0425f487f3c4a68143d9c445a4c5f68259678acbb3e596bfcd884a6068

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