Malicious PDF — malware analysis report

Static analysis result for SHA-256 298e43f69db5e158…

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 02:40:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 58677108c7f36516d87f49f5f893c2b8 SHA-1: 068e85e3a9e5e0863e33c9d9d3766ad3a145aa5e SHA-256: 298e43f69db5e158b30f0771da8d82e85fb6a859b8014a3cd03d3918719f1c20
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The ML classifier strongly indicates maliciousness, and the presence of redirector links confirms a malicious intent to lure users to potentially harmful sites. The document body text and embedded URLs reinforce this lure, aiming to trick users into clicking through to download unwanted software or compromise their accounts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/coin-master-apk-hack-mod-download-game-hack In PDF document text
    • https://library.sman1berau.sch.id/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-roblox-executor-no-key_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/ww-roblox-come_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-its-free-trailer_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-free-clothes-on-roblox_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_002_off00003224.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3224 22996 bytes
SHA-256: 8bb065a7306bd02225cacc012d70afdbe786e07299cbfc7fd8f0b4d1eeb61b8a
font_01_sfnt_off000065ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65EA 18760 bytes
SHA-256: ec7a458fe2bbad6ce9ec209de50d05d0206296983a0e5c16239db9a9d5dfea1c

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