Malicious PDF — malware analysis report

Static analysis result for SHA-256 50adc8f39170e305…

MALICIOUS

PDF

36.1 KB Created: 2021-05-22 23:46:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2b5ec4e265f903db8e77c0f3b1004503 SHA-1: bafdafb678ba75a5dc809ccea03956cfaad6c014 SHA-256: 50adc8f39170e3059c299e06b5ebcd8b9533c6bd0166b65b0f93d4bb1c278c71
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that mimic 'game hack' or 'free generator' lures, specifically mentioning 'how to get followers on tiktok for free'. The primary malicious URL identified is https://netcdn.xyz/app/835599320/how-to-get-followers-on-tiktok-for-free-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest a social engineering tactic to redirect users to potentially malicious content, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9508

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/how-to-get-followers-on-tiktok-for-free-game-hack PDF link annotation
    • https://elearning.mtsn6nganjuk.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn6nganjuk.sch.id/__statics/gudangsoal/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn6nganjuk.sch.id/__statics/gudangsoal/files/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6nganjuk.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn6nganjuk.sch.id/__statics/gudangsoal/files/robux-com-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
stream_002_off0000347f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x347F 25024 bytes
SHA-256: 5d386ffa6e518cb12d708c54255b120ac9f928df61357d75a2b807103c803d5b
font_01_sfnt_off00006dc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC5 17692 bytes
SHA-256: b635499a4f9fb6d9e8967cb3fdd5afd49967982b90c247824071efdea06cfe8e

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