Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a71635530f8005…

MALICIOUS

PDF

32.7 KB Created: 2021-07-19 17:14:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ecef7aeb114b97371d15c50bda4fd70e SHA-1: 4e073d063de6a348d4825c122e6df8710310b4c0 SHA-256: 30a71635530f8005deae4b2a3b6b5a20a19c5d4a9ca9afee2392590df9c68c51
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free game hacks' and directs users to a malicious URL. The embedded document body text and heuristics confirm the intent to trick users into visiting a potentially harmful site. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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 http://netcdn.tw/app/479516143/how-to-get-minecraft-java-for-free-game-hack PDF link annotation
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/free-tiktok-views-no-verification_GM835599320.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/free-tiktok-video_GM835599320.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/how-to-hack-to-get-robux_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_off00002d29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D29 22244 bytes
SHA-256: cea5708aac43d37aecce5d7e5633c54ba2d6d1266a06dc1e138c4ba4ceb42096
font_01_sfnt_off00005e26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E26 18152 bytes
SHA-256: f45ec97da20a8e70f6e7437c3ced33d3bcbd99aef5af4daf3be0ff08d51a9e58

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