Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd16697357e2363f…

MALICIOUS

PDF

33.5 KB Created: 2021-07-06 03:41:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 55400b3a2c3cc2afffe02c0fe66ab6a4 SHA-1: c65b998451538079aa4f0c5a639613b9abcc5329 SHA-256: fd16697357e2363f9f92fb5aeee99317fa0c75b3dd4f9afbf1659865981a2c2f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting game hacks and currency generators. The document body and embedded URLs strongly suggest a lure for users seeking in-game advantages, which is a common phishing tactic. The presence of multiple redirector links indicates a deliberate effort to lead users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/roblox-free-vip-server-game-hack In PDF document text
    • http://lib3tell.stptrisakti.net//repository/roblox-robux_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-robux-boost-com_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/tiktok-free-skin-ml_GM835599320.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/how-to-get-free-likes-and-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/roblox-btools-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-robux-codes-no-survey-no-download_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/roblox-points_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/how-to-get-free-headphones-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-robux-mania_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/coin-master-deals_GM406889139.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_off00002cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEF 21952 bytes
SHA-256: 3ffb29890af4763553f17320a6d73c889f8ca74b9e7707cc9267b1036d55bbf4
font_01_sfnt_off00005d6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6C 19196 bytes
SHA-256: 96e35452f05ae50322602f3f4f38b879b367f7c1a64e4b8b2405175cb301a9fa

Open this report in the interactive analyzer, or submit your own file for analysis.