Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebf2edca29a20ed8…

MALICIOUS

PDF

37.2 KB Created: 2021-07-05 22:31:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 50ddb8cc4e87e5ac179a9a4fa73636a0 SHA-1: c8ffa65962091fa91f2852447010bbe73f96e31e SHA-256: ebf2edca29a20ed87d992e5fc99619caee3a1d915422f01ad1d2afc71f46d74c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one that redirects to malicious infrastructure, masquerading as a game hack generator. The document body and embedded URLs suggest a lure for free in-game currency or cheats, a common social engineering tactic. While no scripts were extracted, the presence of malicious redirectors and the lure indicate a high likelihood of a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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/how-to-get-free-spins-in-coin-master-2021-game-hack In PDF document text
    • https://delsys.com.tw/image/data/files/coin-master-hack-2021-ios-download_GM406889139.pdfIn PDF document text
    • https://delsys.com.tw/image/data/files/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • https://delsys.com.tw/image/data/files/http-appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://delsys.com.tw/image/data/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://delsys.com.tw/image/data/files/free-spin-links-coin-master-october-30-2021_GM406889139.pdfIn PDF document text
    • https://delsys.com.tw/image/data/files/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://delsys.com.tw/image/data/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://delsys.com.tw/image/data/files/free-robux-rixty-codes-2021_GM431946152.pdfIn PDF document text
    • https://delsys.com.tw/image/data/files/roblox-2all-site-free-robux_GM431946152.pdfIn PDF document text
    • https://delsys.com.tw/image/data/files/coin-master-free-chip_GM406889139.pdfIn PDF document text
    • https://delsys.com.tw/image/data/files/how-to-get-robux-for-free-on-a-phone_GM431946152.pdfIn PDF document text
    • https://delsys.com.tw/image/data/files/glotis-how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://delsys.com.tw/image/data/files/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://delsys.com.tw/image/data/files/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://delsys.com.tw/image/data/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • https://delsys.com.tw/image/data/files/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • https://delsys.com.tw/image/data/files/free-roblox-aim-bot_GM431946152.pdfIn PDF document text
    • https://delsys.com.tw/image/data/files/free-minecraft-packs_GM479516143.pdfIn PDF document text
    • https://delsys.com.tw/image/data/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://delsys.com.tw/image/data/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000038f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38F8 23260 bytes
SHA-256: f9458a3173fb06b45c6b08d0e5dd2159b001aa86bcab1bf054f69609b838bd83
font_01_sfnt_off00006d59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D59 18740 bytes
SHA-256: 821de93f8b3417c0f233c24cc26099972f2fb00f78fdfa3c6795f0d6fdf59cc4

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