Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f5c532bebb5e8d2…

MALICIOUS

PDF

48.3 KB Created: 2021-06-03 04:16:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2ffc857d64c331380501b34ef1f339cd SHA-1: 46b6458e818bc04bc2c99b9de1f428b84f65b502 SHA-256: 7f5c532bebb5e8d2467abf6da88c5c5be4adb9a06278883b35c76e0decd2419f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and websites offering game hacks and free currency, such as 'robux-game-hack'. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to lure users to potentially harmful sites. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/431946152/robux-game-hack In PDF document text
    • https://elibrary.ikhac.ac.id/repository/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/pokemon-go-free-team-change_GM1094591345.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/best-way-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-script_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/tiktok-free-fans_GM835599320.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fc6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FC6 27196 bytes
SHA-256: ad7f436673ec65b39e96c0fb6e3f24dd2661001dc1a1136730202821fa1c90ee
font_01_sfnt_off00008ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE2 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009b8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B8A 17852 bytes
SHA-256: ccf20ca1ad80d0cd2f0d464461636129858ae353cf2c3769b35ef20048afdef0

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