Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ba292f4fb082697…

MALICIOUS

PDF

36.3 KB Created: 2021-07-03 13:45:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e620dfb6fc8ad1e015cc0d6532ce552a SHA-1: 54929b6913a6670f634a3d1a840f923cec458e72 SHA-256: 2ba292f4fb082697dab499c01b2ed4026282c1279354dccfd9dc183f5c5b72dc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that are designed as lures for game hacks and free currency, a common tactic for phishing or scamming users. The ML classifier strongly indicated maliciousness, and the heuristics confirm the presence of external URIs and game hack redirect lures. While no scripts were explicitly extracted, the nature of the embedded URLs suggests a potential for further malicious activity, such as downloading additional payloads or redirecting to phishing sites.

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/free-daily-spins-coin-master-2021-game-hack PDF link annotation
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-jailbreak-cheat-2021_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-hack-naval-warfe_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-free-coins-and-spins-online-tool_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/how-to-get-rocket-fuel-for-free-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-free-game-play-online_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/how-to-hack-coin-master-game-without-verification_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/hack-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-promo-code-hack-script_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/moon-active-games_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/rbx-earn_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-boxing-simulator-hack_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-jailbreak-hack-script-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003543.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3543 23036 bytes
SHA-256: 03ad2f90b3f61db432fe02f88572552817120e7e3804fe39e0eca45bd63df7e5
font_01_sfnt_off00006934.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6934 19000 bytes
SHA-256: bff5cd883eb4370b15e965f4fd1aca22479e39b86b51e1d2e4068a25e0992d6d

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