Malicious PDF — malware analysis report

Static analysis result for SHA-256 aac8ffd65cb18933…

MALICIOUS

PDF

35.8 KB Created: 2021-06-29 15:01:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 51ed355f0e9192051a002440ed1bbeb5 SHA-1: 52144a270a8cf183334bac1545e821c68603230b SHA-256: aac8ffd65cb18933dec02acecae89c72765a52f6d68f369155dfcc8339e6fb20
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The document body and heuristics indicate a lure to download or access potentially unwanted or malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or social engineering attack aimed at tricking users into visiting malicious 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/roblox-chat-hacks-grab-knife-game-hack In PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-chip_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/cheat-codes-roblox-rocitizens_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-hack-tool-no-survey_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-hack-roblox-games-with-no-downloads_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/como-hacer-que-en-roblox-todo-te-salga-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-pokemon-legends-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/application-pour-hack-sur-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-online-roblox-download_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/reaper-quest-cheats-engine-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/i-finally-found-a-game-that-gives-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-code-genorator_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-fan-club_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/legit-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-phantom-forces-all-guns-free-and-attachments_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/galaxywqlfroblox-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-make-a-private-server-on-roblox-for-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_off00003260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3260 23260 bytes
SHA-256: c5f5e52dcc8087ae6174d2f6b5078dcfc9dbe16930c918025e0b54c67d8bb2fb
font_01_sfnt_off00006700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6700 19044 bytes
SHA-256: af207dcd31884f75cc757aa3d1e666264765f38f6158712610153f41651ae4b7

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