Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a298078cc02ec08…

MALICIOUS

PDF

47.2 KB Created: 2021-06-11 08:07:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a32363bb1233126e1f3e73b56d91c577 SHA-1: aa16fb17f88045ce412cb7cbb79181d1f6d908e5 SHA-256: 4a298078cc02ec084f71865cd608829124ccd83bee703a835ddd96a6d026e0bc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to a 'game hack' lure. This indicates the document's primary purpose is to redirect users to potentially malicious websites. The presence of numerous other URLs, while not explicitly malicious, supports the redirection theme. No scripts were extracted, but the document structure and heuristics strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/escape-room-roblox-cheats-theater-game-hack In PDF document text
    • https://library.uigm.ac.id/repository/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-a-free-skin-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-fly-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-a-free-hoverboard-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/pokemon-go-free-2021-tier-list_GM1094591345.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-exe_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-ad_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/site-robux-free_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-omg_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/candy-ice-cream-simulator-roblox-script-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-spins-and-coins-on-coin-master_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_004_off00005388.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5388 28688 bytes
SHA-256: 361fe0cd9f257536845da98176cf6bf24f6d398c8d9814b895699dfb3ca56262
font_01_sfnt_off000094c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94C3 18716 bytes
SHA-256: 3496968288c4dd34d2b511a492a2c97e4ae111a351d6a15b7183dc7291e2361e

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