Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8df8ce54fe6b3a3…

MALICIOUS

PDF

44.3 KB Created: 2021-06-08 22:52:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 880987f448891cd73fd4986ee6c8f8f5 SHA-1: fa9a8ef8ea4a395142080841c62042b81e1f6c05 SHA-256: a8df8ce54fe6b3a31d24142fb28fc086e5ca8a29114e74bd2a9ec739ae0c8a43
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising game hacks and generators. The primary URL, https://netcdn.tw/app/431946152/roblox-ninja-warrior-teleport-hack-game-hack, is flagged as a malicious redirector. This suggests the document's purpose is to lure users into clicking these links, likely leading to further malicious content or exploitation. No scripts were extracted, but the embedded URLs are strong indicators of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/roblox-ninja-warrior-teleport-hack-game-hack In PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/roblox-analytics-hack_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/roblox-dbz-final-stand-cheats_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/free-roblox-jpg_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/roblox-free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/how-to-get-bloxburg-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/free-hair-roblox-girl-2021_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/robux-hack-ultimate-gamer-365_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/free-robux-roblox-yolasite_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/roblox-passwort-hacken_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/gladiator-simulator-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/free-robux-2021-real_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/how-get-free-stuff-in-roblox_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/roblox-com-mobile-hacks-for-free_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/free-robux-pastebin-promocode_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_004_off000050a6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50A6 24848 bytes
SHA-256: f1620386951bc5096a6ec6e3d84b1a920ac5cf1bc6f310d70613de2d3894bd9d
font_01_sfnt_off00008840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8840 18968 bytes
SHA-256: d3d0014c3e53c5fcde8fb67b453bf903b3a69f097a5da385a212d5c5c5c4f7f7

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