Malicious PDF — malware analysis report

Static analysis result for SHA-256 5644cb1a8a81a7a2…

MALICIOUS

PDF

35.3 KB Created: 2021-05-21 00:15:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 934511b0f0d5294dd433dc626e3e4e0f SHA-1: 103b20b8d1bdd7e0aca673549837c74de9abeb6b SHA-256: 5644cb1a8a81a7a21da353348e53e3e6b6adc46467249f587589b2a2ce082cda
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to known malicious redirectors, including one that masquerades as a 'free Tiktok Likes Generator' and 'game hack'. The ML classifier also flagged this PDF as malicious. The embedded links likely lead to further malicious content or exploit kits, aiming to trick users into downloading or executing further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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.xyz/app/835599320/free-tiktok-likes-generator-game-hack In PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/game-give-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/get-robux-now_GM431946152.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/coin-master-hack-extension_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
stream_002_off000032d1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32D1 24172 bytes
SHA-256: 1e9ba180a36fc7a8797d69bb737e6e43d7c88795df413c9d01042983b444982e
font_01_sfnt_off00006a4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A4B 17684 bytes
SHA-256: 5a858a9ba580e5964a46b2eec995bc00b893a7f5d7a57062f00620da516a4987

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