Malicious PDF — malware analysis report

Static analysis result for SHA-256 590a72780456b925…

MALICIOUS

PDF

45.8 KB Created: 2021-06-07 21:31:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 15bc385544260bb32ee4804e6e9b08c5 SHA-1: b8dd3a28215b6d28a71b6f50a96ab6995082cee9 SHA-256: 590a72780456b92502fb9de446f2afb5ae0f56d588dd764eec7fa2c1fe4817ae
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF document contains multiple links to external websites, including a known malicious redirector, that promise game hacks and generators. It also displays a fake CAPTCHA or human verification prompt to trick users into interacting further. The primary goal appears to be directing users to potentially malicious sites for scams or further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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 https://netcdn.tw/app/431946152/how-to-hack-roblox-jailbreak-2021-game-hack In PDF document text
    • http://dopheide.be/images/pubg-uc-zarah_GM1330123889.pdfIn PDF document text
    • http://dopheide.be/images/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://dopheide.be/images/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://dopheide.be/images/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://dopheide.be/images/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
    • http://dopheide.be/images/coin-master-club-hack_GM406889139.pdfIn PDF document text
    • http://dopheide.be/images/free-roblox-executor-no-key_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://dopheide.be/images/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/archery-master-3d-coins-hack_GM406889139.pdfIn PDF document text
    • http://dopheide.be/images/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://dopheide.be/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/tiktok-free-50-followers_GM835599320.pdfIn PDF document text
    • http://dopheide.be/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/coin-master-free-spins-link-june-2021_GM406889139.pdfIn PDF document text
    • http://dopheide.be/images/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • http://dopheide.be/images/free-roblox-accounts-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
stream_004_off00005333.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5333 25848 bytes
SHA-256: d76ad9d7b15f520406ca2c428ccc8f6481cb16bfd20843ecc309039d02e9dea0
font_01_sfnt_off00008e0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E0A 19036 bytes
SHA-256: a5b1747c4887c4986eae126800b25f25e65ce1e5d54683e58a86b4e83572a119

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