Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e178d124f6b8d09…

MALICIOUS

PDF

52.6 KB Created: 2021-06-07 08:18:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 85c1808c001da466aba312ceb21f02d8 SHA-1: 17aa6dfb144af40c7f4ec8785800ba2a2b14d849 SHA-256: 8e178d124f6b8d096ec3a4d657bff413c59352b1431a81f48f1f70fc6f554044
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 0.9586

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/roblox-cheating-girlfriend-game-hack PDF link annotation
    • http://library.umla.ac.id//repository/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-money-hack_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-images_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/tiktok-free-steam-games_GM835599320.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/hacks-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/roblox-free-followers_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000528b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x528B 32236 bytes
SHA-256: f7b1de96b2ce0649a619c123c3a25fab851daa7529692b477d21054480dd04b4
font_01_sfnt_off00009ab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AB3 6100 bytes
SHA-256: f866077ce59d6ea276f75e4af76daa2aab5f3a1a679df144776123d85664d65c
font_02_sfnt_off0000a93e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA93E 18864 bytes
SHA-256: 194259da4d4c3eff1255ffe649d5865c771a74738fa8f676ce6688dce7e8a5ba

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