Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ec60ea2b0a3a9f5…

MALICIOUS

PDF

44.4 KB Created: 2021-06-07 06:33:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 1dab734f2bb0ba61378629ae30ee87e9 SHA-1: 95110ac6d4d73a24fe89be2de02da4afce6a6b28 SHA-256: 2ec60ea2b0a3a9f59424bc171f47d68ea09c7416380e5c601865ad6719a89b5e
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and websites offering game hacks and generators, such as 'green-lego-cats-free-robux-game-hack'. The presence of a fake CAPTCHA heuristic suggests an attempt to trick users into further interaction, likely leading to malware download or credential harvesting. The document body and embedded URLs strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/green-lego-cats-free-robux-game-hack In PDF document text
    • http://apx-centre.ru/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/hack-de-coin-master_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/free-tiktok-likes-without-verification_GM835599320.pdfIn PDF document text
    • http://apx-centre.ru/images/free-executors-for-roblox_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/roblox-hack_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/how-to-get-100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/coin-master-free-gift-cards_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/free-tiktok-followers-2021_GM835599320.pdfIn PDF document text
    • http://apx-centre.ru/images/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • http://apx-centre.ru/images/hack-minecraft_GM479516143.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_off00004fa0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FA0 25396 bytes
SHA-256: d58d0f205f2c4eb7d9397b638b3cfd634d39bba076e908410aba5ec5dd27336f
font_01_sfnt_off000089a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A4 18636 bytes
SHA-256: 4a01fa71a757bf72032238a2a2650adb48c66c7fa8340458ad00fe5de53b939f

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