Malicious PDF — malware analysis report

Static analysis result for SHA-256 454c82be377d54e9…

MALICIOUS

PDF

41.2 KB Created: 2021-05-10 18:03:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 5901dec437ab8d7da1f1bd9a8359d520 SHA-1: b4e32919f92eeb3ab634dba3b8f7a334ee1bebd3 SHA-256: 454c82be377d54e9458d7276c7149be9392051eb9c5be4066693789d4c94fba7
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 0.9974

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/431946152/free-robux-link-game-hack PDF link annotation
    • http://www.dolciariavarone.com/images/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/hack-master-coin-pc_GM406889139.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/what-do-roblox-points-do_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
stream_003_off00004237.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4237 26532 bytes
SHA-256: 16f08a0a42a66f1322122c09652ec3f576b0550b1ff187ba326984af999bdb32
font_01_sfnt_off00007f5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5D 18304 bytes
SHA-256: a4aae99c46e0a0f586669c3aecb8c0d6e5f23962dc49b2f1654f133382ac5317

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