Malicious PDF — malware analysis report

Static analysis result for SHA-256 e040c3258b140b45…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 20:33:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dcda1db6be012e82b39d20afaf331dc1 SHA-1: 3ee31fbb347ef37882ac95f7e9f80f0847def5f7 SHA-256: e040c3258b140b45b5a55e83086ee05b4a702adfb5f41a0cc7b9643a5e6330fc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free in-game currency and hacks for popular games like Roblox and Coin Master. It contains multiple embedded URLs, with the primary one, http://netcdn.tw/app/431946152/roblox-bloxburg-free-money-game-hack, identified as a malicious redirector. The document's structure and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

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/431946152/roblox-bloxburg-free-money-game-hack In PDF document text
    • https://morishita-tc.com.tw/image/data/files/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/www-free-robux_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/roblox-hack-tools-in-the-game-no-mega_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/roblox-hack-tix-and-robux-generator_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/hack-rapido-roblox_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/hack-account-roblox-2021-edit-this-cookies_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/roblox-free-ss_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-2021-free-spins-link_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/take-anyones-robux-robuxian-hack_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/free-robux-with-nothing-just-pick-amount-thats-it_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-do-i-hack-roblox-free-robux_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_off00002e12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E12 22080 bytes
SHA-256: c4bfa804e8baa8980fa5dc9a84fccaad9e07a997a1f07bdc48e35f59942fcc70
font_01_sfnt_off00005ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF7 19164 bytes
SHA-256: 8995239e6c0d6922e64f735175f92e963a7837a7669cb4cc280136801e550be8

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