Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb80423bd568146c…

MALICIOUS

PDF

35.1 KB Created: 2021-07-09 06:40:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 160b66b16c4f58a09798cdca11ab04c3 SHA-1: 7ffdb915b5bdc7b7aa06980f491dc72a1480b16b SHA-256: fb80423bd568146c8995f2cebbe7b2ac0cecaddaa6583b7cbd073c246d5cf0dd
160 Risk Score

Malware Insights

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

This PDF document contains multiple links to known malicious redirectors, including one that masquerades as a 'game hack' generator. The document body and embedded links suggest a social engineering lure to trick users into downloading potentially malicious files or visiting compromised websites. While no scripts were extracted, the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of a malicious workflow, likely involving the exploitation of PDF vulnerabilities to execute further stages.

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/479516143/toolbox-for-mcpe-game-hack In PDF document text
    • http://astdubai.co/userfiles/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-hacks-for-spins_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/rape-simulator_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/roblox-shirt-maker-online-free-shipping_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/cmaster-club-coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-spin-hack-pc_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/fast-robux-online_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-music-id-roblox_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/today-coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-make-own-roblox-shirt-free_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_off00003468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3468 22404 bytes
SHA-256: ad255e19abe772c4028029de63befadf8db4d8ee22ba16801e7661a60fd82b45
font_01_sfnt_off00006648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6648 18392 bytes
SHA-256: 6731796fcc3540c9bce8cf4082208439aef10811acb01390060e5f462b6e1492

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