Malicious PDF — malware analysis report

Static analysis result for SHA-256 65476b12aa42ed6d…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 16:29:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 342f61df0b4498d0344669e3f1cf11ea SHA-1: 16b0cfa5812c3edfdc6a8947fa4cb89bcb463a83 SHA-256: 65476b12aa42ed6d8e77452899f7d0bc58b805af5d76e620622d7e25c6a01b82
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 0.9980

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 http://netcdn.tw/app/431946152/how-to-get-free-clothes-on-roblox-2021-game-hack PDF link annotation
    • http://pn-singaraja.go.id/new/public/ckfinder/userfiles/files/free-games-coin-master_GM406889139.pdfIn PDF document text
    • http://pn-singaraja.go.id/new/public/ckfinder/userfiles/files/robux-online_GM431946152.pdfIn PDF document text
    • http://pn-singaraja.go.id/new/public/ckfinder/userfiles/files/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://pn-singaraja.go.id/new/public/ckfinder/userfiles/files/roblox-hacks-xray-2021_GM431946152.pdfIn PDF document text
    • http://pn-singaraja.go.id/new/public/ckfinder/userfiles/files/abd-roblox_GM431946152.pdfIn PDF document text
    • http://pn-singaraja.go.id/new/public/ckfinder/userfiles/files/cheat-roblox-dragon-ball-rage_GM431946152.pdfIn PDF document text
    • http://pn-singaraja.go.id/new/public/ckfinder/userfiles/files/ice-cream-simulator-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://pn-singaraja.go.id/new/public/ckfinder/userfiles/files/robux-in-roblox-free_GM431946152.pdfIn PDF document text
    • http://pn-singaraja.go.id/new/public/ckfinder/userfiles/files/coin-master-free-coins-generator_GM406889139.pdfIn PDF document text
    • http://pn-singaraja.go.id/new/public/ckfinder/userfiles/files/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://pn-singaraja.go.id/new/public/ckfinder/userfiles/files/nelson-diamond-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pn-singaraja.go.id/new/public/ckfinder/userfiles/files/coin-master-level-4_GM406889139.pdfIn PDF document text
    • http://pn-singaraja.go.id/new/public/ckfinder/userfiles/files/roblox-sword-fighting-tournament-points-hack_GM431946152.pdfIn PDF document text
    • http://pn-singaraja.go.id/new/public/ckfinder/userfiles/files/false-dbfp-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pn-singaraja.go.id/new/public/ckfinder/userfiles/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://pn-singaraja.go.id/new/public/ckfinder/userfiles/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://pn-singaraja.go.id/new/public/ckfinder/userfiles/files/free-robux-come_GM431946152.pdfIn PDF document text
    • http://pn-singaraja.go.id/new/public/ckfinder/userfiles/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://pn-singaraja.go.id/new/public/ckfinder/userfiles/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://pn-singaraja.go.id/new/public/ckfinder/userfiles/files/roblox-free-login_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
font_00_sfnt_off0000319f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x319F 21556 bytes
SHA-256: c1b0a7884145ab2ec2adfbab489c6ef11de6048fcb0d4e98b27aceefb09c53eb
font_01_sfnt_off000060e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E1 19488 bytes
SHA-256: 5c44ae8fd41eacdf4f73c4aec0f860b4439da3b6475414bd96c5f431db901601

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