Malicious PDF — malware analysis report

Static analysis result for SHA-256 35eea2cee105e27e…

MALICIOUS

PDF

35.4 KB Created: 2021-06-27 14:34:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 56febbdb83b37483f29a9460502e2323 SHA-1: 35b0ca96c2db6f8dbed166ab852c83fe2284e9b6 SHA-256: 35eea2cee105e27e0f48d23ba06be09f4ae7ee77273bdc9f6d151bda4ec6418c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as game hacks and generators for popular games like Roblox and Coin Master. The embedded URLs are designed to lure users into clicking, likely leading to further malicious content or malware downloads. No scripts were extracted, but the presence of numerous redirector links and the ML classifier's high confidence score indicate a malicious intent to redirect 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.co/app/431946152/roblox-spam-hack-game-hack In PDF document text
    • http://rightlead.com.tw/image/data/files/roblox-lost-hack_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/escape-room-by-devultra-cheats-roblox-forest_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/how-to-robux_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-robux-no-human-verification-or-password-roblox_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/comment-tlcharger-un-cheat-sur-roblox-avec-explication_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-robux-co_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/can-i-please-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/hack-avatar_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-tiktok-followers-instantly_GM835599320.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/roblox-robux-hack-no-survey-or-password_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/comment-avoir-le-free-skin-de-strucid-roblox_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/is-minecraft-vr-free_GM479516143.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_off0000337b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x337B 22724 bytes
SHA-256: 701170e80a954cae3d01d0c68726affedde4da100fceef97ae66ce7a7438700c
font_01_sfnt_off0000652d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x652D 19092 bytes
SHA-256: 7d983637d5321355847fdacc10f988102a652d94d461b4add99b28938ce56f79

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