Malicious PDF — malware analysis report

Static analysis result for SHA-256 f713f14e16709829…

MALICIOUS

PDF

33.4 KB Created: 2021-07-20 09:01:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d7320d8beac92fa48e670f3b67d95510 SHA-1: 17f1934369ab694b9cf448e17532f55037e1d21c SHA-256: f713f14e1670982991de89774651af4872bc98895704720fd4d653846f4206d8
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 0.9942

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/free-robux-no-human-verification-or-survey-2021-game-hack PDF link annotation
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/hacks-roblox_GM431946152.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/free-robux-generator-for-kids_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_off00002bad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BAD 21852 bytes
SHA-256: 83e94196f1c95c2f37ed24a137489785982ef540f520a5028e48995028d7a416
font_01_sfnt_off00005bf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF2 19744 bytes
SHA-256: 046dde0b98b0e350a9b3d039bd59d00ed9dd60c59f8a340029bdaeca07b7a61f

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