Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f68faa2cf3c305d…

MALICIOUS

PDF

45.4 KB Created: 2021-06-10 21:42:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f5b53b7fee174fc43dc960dbe3da16ba SHA-1: 1b2d776c2f8fadc1c658bed7a22a931ebfd40952 SHA-256: 1f68faa2cf3c305db2ea81e1b7c2f3b23d3dcef56ba21dc09f369f54fd708852
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a game hack lure, directing users to a known malicious redirector. The document body, though partially corrupted, contains text related to 'cheat engine on roblox' and a URL that aligns with the heuristic findings. This suggests a phishing or scam attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/can-you-use-cheat-engine-on-roblox-to-get-robux-game-hack In PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-premium-free_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/minecraft-114-download_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/mcpe-download_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-free-wings_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/hack-robux_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-robux-in-obby_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-dominus-hack_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/dragon-ball-fury-roblox-hack_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-hack-robux-and-tix-download_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_off0000500e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x500E 26240 bytes
SHA-256: f38d4b4d835c72fef35cb3742bcc43b6e7a7adb5e013c0ea48c45239b32e02ae
font_01_sfnt_off00008c53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C53 19180 bytes
SHA-256: 0584b69c91d2b7ba7c380f4b94b7de974588bc0225c318cd37143528ede7a4c7

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