Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fb4102d326cae34…

MALICIOUS

PDF

43.8 KB Created: 2021-06-03 22:23:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f08f8c77ac5963983fb3f7f952cee303 SHA-1: 9efa6e84aed6c1f1c72cf56b053ac360924625df SHA-256: 4fb4102d326cae34ce61e8f483ab98a0d61337d88d424ccabbd61c59797046ad
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.online/app/406889139/coin-master-free-spins-and-coins-link-blogspot-game-hack PDF link annotation
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-roblox-money_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/hackear-coin-master-android_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-daily-spins-2021_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://coinmasterspinandcoin.comIn 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_004_off000050ef.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50EF 23720 bytes
SHA-256: 171c4f0b1fa1d2b309808b8da78aac9281d300b818dc920b38eeaa7114a0ed1b
font_01_sfnt_off000086dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86DD 18808 bytes
SHA-256: 03b21e015184c6ee707266379cca5c27191cb89bc46cd5e8ba76e84d1a33d40b

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