Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa76e03d7a614db8…

MALICIOUS

PDF

34.5 KB Created: 2021-07-02 04:44:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b00a8a8ffd7f27bffb705207887167d1 SHA-1: a335ade5aca040cbf4253beb9c8491ce7fcfdde6 SHA-256: fa76e03d7a614db8edb03646cb7d64753ef14a5acae6d32946d46c1f3775514d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and generators. The primary lure is a link promising 'free Robux', which is a common tactic for phishing and malware distribution. The document body and embedded URLs strongly suggest a social engineering attempt to trick users into visiting potentially harmful sites.

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.co/app/431946152/how-to-hack-to-get-robux-2021-game-hack In PDF document text
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/is-there-anyway-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/roblox-hack-robux-games_GM431946152.pdfIn PDF document text
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/free-coin-master-spin-generator_GM406889139.pdfIn PDF document text
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/free-robux-2021-july-inspect-element_GM431946152.pdfIn PDF document text
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/how-to-get-free-robux-website-and-group_GM431946152.pdfIn PDF document text
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/free-robux-games-that-actually-work-2021-links_GM431946152.pdfIn PDF document text
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/roblox-hacker-melden_GM431946152.pdfIn PDF document text
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/how-to-get-free-robux-in-roblox-november-2021_GM431946152.pdfIn PDF document text
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/robux-free-com_GM431946152.pdfIn PDF document text
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/is-coin-master-hacks-safe_GM406889139.pdfIn PDF document text
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/coin-master-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/new-code-free-robux_GM431946152.pdfIn PDF document text
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/free-robux-working_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
font_00_sfnt_off00003126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3126 21628 bytes
SHA-256: e9d76e2c19f263668fd428e8ed06a826c0caaa4d56b1e8ab7ec88947beffd76f
font_01_sfnt_off0000609a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x609A 19392 bytes
SHA-256: 2ed545ff7ca4130fb6a83a8d1a4f501942ec9daa6925d5f0cdfdcd6851924c92

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