Malicious PDF — malware analysis report

Static analysis result for SHA-256 805a15d5bb482154…

MALICIOUS

PDF

32.6 KB Created: 2021-07-21 07:50:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 441cd007ecfded338a1ad31f258db12b SHA-1: 132b17016196920008aaa537b56a388a2d9be363 SHA-256: 805a15d5bb482154c93403f66f4ab84f189ffe44a1f618eb241248962431a1e6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a prominent link within the document body, all pointing to sites offering game hacks or generators. The heuristic firings confirm the presence of external URIs and a game hack redirect lure. The ML classifier strongly indicates maliciousness. The primary URL, http://netcdn.tw/app/431946152/how-to-hack-to-get-robux-game-hack, is the most likely destination for the malicious payload.

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/431946152/how-to-hack-to-get-robux-game-hack PDF link annotation
    • https://www.clarence-rockland.com/images/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://www.clarence-rockland.com/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.clarence-rockland.com/images/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://www.clarence-rockland.com/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://www.clarence-rockland.com/images/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • https://www.clarence-rockland.com/images/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.clarence-rockland.com/images/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://www.clarence-rockland.com/images/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://www.clarence-rockland.com/images/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://www.clarence-rockland.com/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002bb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB1 21896 bytes
SHA-256: 98b88c635dca953bf000159d0b2442f2fc28318e080b9bb60ae283889c508f88
font_01_sfnt_off00005bc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC3 18700 bytes
SHA-256: 422c4f1b8ce49a2bad5064ab2df80448ff4f857d80ac720e8fae67c1278daef4

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