Malicious PDF — malware analysis report

Static analysis result for SHA-256 93b76f2f08ad9c09…

MALICIOUS

PDF

42.8 KB Created: 2021-06-13 21:59:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ef946387872cdf83b90edf6563cfffb0 SHA-1: 3ad9c7debb4e26b1c7a9fc27b0cdd9ee01e88b8b SHA-256: 93b76f2f08ad9c09699a46c5d39fd6b27831f672b3f5aa585ae26d567c581821
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and sites offering game hacks, such as 'roblox-us-hack-game-hack'. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to lure users to potentially harmful content. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-us-hack-game-hack In PDF document text
    • https://ibelive.com.tw/image/data/files/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/coin-master-free-coins-twitter_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-roblox-passwords_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-robux-meme_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/how-to-hack-any-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-robux-android_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/coin-spin_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/roblox-rape_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/coin-master-hack-progamers_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

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_off00004a14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A14 26284 bytes
SHA-256: 65c65a6a1fa5f216c62a4778261b4a64e9954683e7a6fb3c0fd67a22cd7d9e6a
font_01_sfnt_off000084b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84B5 18368 bytes
SHA-256: b8641a87aad9d044e953dc0f427dddf50fc546e1d7f7db1b0c9d16c780968b3b

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