Malicious PDF — malware analysis report

Static analysis result for SHA-256 e29d80c2405c64b6…

MALICIOUS

PDF

42.3 KB Created: 2021-05-14 10:39:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c618dfb627a5f4f2aa7a7c7262647951 SHA-1: f3c91a98228e3d187e26863650f36413bc803115 SHA-256: e29d80c2405c64b602d85bf732120cf219a41adffe827d8582370e4d8924b9f6
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. 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 0.9971

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/rbxcity-free-robux-game-hack PDF link annotation
    • http://elearningmtsn2kotatasikmalaya.com/__statics/gudangsoal/files/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://elearningmtsn2kotatasikmalaya.com/__statics/gudangsoal/files/minecraft-images-free_GM479516143.pdfIn PDF document text
    • http://elearningmtsn2kotatasikmalaya.com/__statics/gudangsoal/files/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://elearningmtsn2kotatasikmalaya.com/__statics/gudangsoal/files/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://elearningmtsn2kotatasikmalaya.com/__statics/gudangsoal/files/where-to-get-robux_GM431946152.pdfIn PDF document text
    • http://elearningmtsn2kotatasikmalaya.com/__statics/gudangsoal/files/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elearningmtsn2kotatasikmalaya.com/__statics/gudangsoal/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://elearningmtsn2kotatasikmalaya.com/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elearningmtsn2kotatasikmalaya.com/__statics/gudangsoal/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://elearningmtsn2kotatasikmalaya.com/__statics/gudangsoal/files/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • http://elearningmtsn2kotatasikmalaya.com/__statics/gudangsoal/files/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • http://elearningmtsn2kotatasikmalaya.com/__statics/gudangsoal/files/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • http://elearningmtsn2kotatasikmalaya.com/__statics/gudangsoal/files/coin-master-free-coins-and-spins-group_GM406889139.pdfIn PDF document text
    • http://elearningmtsn2kotatasikmalaya.com/__statics/gudangsoal/files/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • http://elearningmtsn2kotatasikmalaya.com/__statics/gudangsoal/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://elearningmtsn2kotatasikmalaya.com/__statics/gudangsoal/files/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elearningmtsn2kotatasikmalaya.com/__statics/gudangsoal/files/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://elearningmtsn2kotatasikmalaya.com/__statics/gudangsoal/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • http://elearningmtsn2kotatasikmalaya.com/__statics/gudangsoal/files/coin-master-daily-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://elearningmtsn2kotatasikmalaya.com/__statics/gudangsoal/files/how-to-get-minecraft-coins-for-free_GM479516143.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_off00004a25.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A25 24504 bytes
SHA-256: f1beb4e92d5babb0040d4073b9c5ee75673a9c8fd58c4f73b133d30abc4b227c
font_01_sfnt_off0000826d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x826D 18420 bytes
SHA-256: f6fda3bfe323f9f0676c079c6b9141a3a072b0621584b37e36c0c9937e592518

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