Malicious PDF — malware analysis report

Static analysis result for SHA-256 96a6ea96a7537ff7…

MALICIOUS

PDF

34.4 KB Created: 2021-07-06 08:24:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: d29a03219fa2312d80af4301fcf3129a SHA-1: 00eb22e1c1526ff59d5e071d2a3b3315c9f155ce SHA-256: 96a6ea96a7537ff7ac723e5d5f3cef8bcf1ed3125df67d998a8fc85cb4fdfb42
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are identified as malicious redirectors, specifically targeting users with lures for game hacks and free currency. The primary URL, http://netcdn.tw/app/406889139/coin-master-daily-free-spins-2021-game-hack, is associated with a 'game hack' lure. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

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-daily-free-spins-2021-game-hack In PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-32-hack-apk_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/pokemon-go-free-incubator_GM1094591345.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/offers-for-robux_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-free-spin-redeem-code_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/roblox-how-to-get-a-hacked-account-back-2021_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/fencing-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-spins-on-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/get-robux-com_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-code-a-patrick-the-star-hack-roblox-c_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/hack-the-coin-master-game_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-hack-coin-master-in-pc_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_off00002f92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F92 22440 bytes
SHA-256: 3ab3bbfd404761ebb93f44686f2574a454adf227761453f4a6bc74933b0c3226
font_01_sfnt_off00006176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6176 19000 bytes
SHA-256: 528a935dd58865e4a106a1d117939a17801f064f5f0487dbd1677077be344488

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