Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1d3c65d0d3560e1…

MALICIOUS

PDF

34.9 KB Created: 2021-06-27 20:44:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5ee11dd154aa3218089fc93fa58f0b23 SHA-1: bc36037ee0d4b4316e69db23d4739963790c6db8 SHA-256: f1d3c65d0d3560e175a40f31aab48ad335f4ff0e376cf62f74ae329e55cebab9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as game hack generators. The primary malicious link is http://netcdn.co/app/431946152/comment-hacker-roblox-version-anglaise-game-hack, which is designed to lure users into downloading further malware. The ML classifier also strongly indicated maliciousness, supporting the observed redirection behavior.

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/comment-hacker-roblox-version-anglaise-game-hack In PDF document text
    • https://elibrary.ikhac.ac.id/repository/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-roblox-pumpkin-stencil_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/lego-hack-download-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-roblox-codes-that-nobody-have-havent-used-yet_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/project-alpha-roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-how-to-get-robux-for-free-no-hacks_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-free-robux-robux-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-exploiter-hacked_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-100-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-characters-without-robux-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/minecraft-mod-updater_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-do-you-get-free-food-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
font_00_sfnt_off00002f3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3A 22912 bytes
SHA-256: 1d8c7282ccde5537e1cd32a145ac78cdbf1a31a8e97eeea1e2757c4dbb450b90
font_01_sfnt_off000062ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AB 19276 bytes
SHA-256: 10157971968b4785f312ef32b5aad124096618ee127de46f78e1e3a3869f6323

Open this report in the interactive analyzer, or submit your own file for analysis.