Malicious PDF — malware analysis report

Static analysis result for SHA-256 3420d987f201a5c1…

MALICIOUS

PDF

33.9 KB Created: 2021-07-04 00:21:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 7bae7c1dd8a73563f94e608cc7764424 SHA-1: 8170e14789893ce1bc5d3cd6a3b4d938c19ddc8d SHA-256: 3420d987f201a5c165b37889648fb76b8b0b371f7dbbfd51886aeefd94b23d7f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and infrastructure, specifically advertising 'Coin Master' hacks and 'Robux' generators. The heuristic firings confirm these links lead to malicious redirectors and are designed as a lure for game hacks. The document body and embedded URLs strongly suggest a social engineering tactic to drive traffic to potentially malicious 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/406889139/coin-master-apk-hack-358-game-hack In PDF document text
    • http://rightlead.com.tw/image/data/files/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-daily-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-robux-v3rmillion_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/30-robux-free_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-roblox-accounts-google_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-hack-tool-generator_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-redeemable-robux-codes_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/roblox-mobile-hack-generator_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_off00002e64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E64 22424 bytes
SHA-256: d6339f28ae4d033501381325e43cbf2a04f3955fb98afb7b41c193a9a4c25d90
font_01_sfnt_off0000606c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606C 18696 bytes
SHA-256: 37466016b432fe2c4302c226887fb4a123f095adabdcdeca05fa6b35b2ac340f

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