Malicious PDF — malware analysis report

Static analysis result for SHA-256 952b690f2d39e972…

MALICIOUS

PDF

33.8 KB Created: 2021-07-04 21:28:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 057585c6e21957104d93bbeb745e56a9 SHA-1: cf125b235143ae4fa7098b89097c8cd2a8c5961b SHA-256: 952b690f2d39e972276752256698eab1a814572bbb12619774dbeb667e6ec7b8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a game hack redirector, specifically targeting Coin Master and Roblox. The document body and embedded URLs reinforce this lure, directing users to the URL http://netcdn.tw/app/406889139/hackear-coin-master-2021-game-hack, which likely serves as a phishing or malware distribution point. No scripts were extracted, but the overall pattern suggests a social engineering attack to trick users into visiting a malicious site.

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/406889139/hackear-coin-master-2021-game-hack PDF link annotation
    • http://lib.teknik.unimal.ac.id/repository/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/114-4-hacks_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-hack-roblox-for-unlimited-money_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-pokemon-brick-bronze-beta-roblox_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-free-robux-denisdaily_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/youtube-how-to-get-free-robux-on-roblox-jeff-tech_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/pubg-uc-hack-xda_GM1330123889.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/logo-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-roblox-hair-to-wear_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-free-spins--spins_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-coins-and-spins-link-for-coin-master_GM406889139.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_002_off00002cf5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2CF5 23168 bytes
SHA-256: 034d03d3bf58ccfafd6413e01eac0aba5e1d05b4ec57ee558767aab66ed6afae
font_01_sfnt_off000060e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E8 18408 bytes
SHA-256: e12145284ed43bacda9ea04b287d11ad422f80f0b9ba3e5eb455bf472c7ad3e4

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