Malicious PDF — malware analysis report

Static analysis result for SHA-256 b86d0dca69240235…

MALICIOUS

PDF

38.3 KB Created: 2021-05-21 04:24:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 18da4fb3d808567be3afd77502f87d06 SHA-1: 902129dad40186048d8e06b6d9e460f4b77826e7 SHA-256: b86d0dca692402353514476e93ab5f7e0390f3ec5accd5ba7251858c4f32a7ed
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7010

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/free-tiktok-likes-without-verification-game-hack PDF link annotation
    • http://www.sapaengineering.kz/images/free-spin-coin-master-app-download_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/coin-master-hack-september-2021_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003014.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3014 25256 bytes
SHA-256: 112a857fbb9a4f5bab36eac7b91ddfcbc5f69c4a9cbda5198e15d6bad73e8877
font_01_sfnt_off000069f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F0 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000073db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73DB 18324 bytes
SHA-256: 2890867b549cf671f2c98eef92adc8de00a1acce0cbbf08ac1c0ae5a6c34295b

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