Malicious PDF — malware analysis report

Static analysis result for SHA-256 5466be5a0db9ee59…

MALICIOUS

PDF

43.2 KB Created: 2021-06-07 01:37:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b36c87ecd7538a5546ce9ce065bbd1c1 SHA-1: 268332dae514ad5377e25a0a5e41b8809e34a3db SHA-256: 5466be5a0db9ee5918bd4822cf6824f75720d4ee0e636f585215962ac5567222
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 0.9865

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.tw/app/431946152/robux-for-free-codes-game-hack PDF link annotation
    • http://uctovnictvosnv.sk/images/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/free-robux-no-inspect_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/optifine-pe_GM479516143.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/minecraft-pe-016-0-apk-download-free_GM479516143.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/coin-master-tips_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 3

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_004_off00004e22.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E22 24556 bytes
SHA-256: a8a761d7c8abb6cc73677fbb9cafc5f5d5fc764d5e3e7c77e967f3d55277dc02
font_01_sfnt_off00008681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8681 18188 bytes
SHA-256: dc8bf01913302101b4a6c43eb1a349b6e9af7584e9a53004a1d0826236b1d8bd

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