Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fe44d565e77c11c…

MALICIOUS

PDF

45.6 KB Created: 2021-05-14 17:16:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 4f1bd0fac64dc693ab930dd69e2ca6e3 SHA-1: b081226642f1fe2dad1bfa08ebd92d7c7f0f2a55 SHA-256: 7fe44d565e77c11c59864525accdc2f252a2e6364cc5725dce724ebbb3a1f3f5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The document body and embedded URLs promote free Robux and game hacks, aiming to entice users to click through to potentially malicious sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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 https://netcdn.xyz/app/431946152/free-robux-no-verification-required-game-hack In PDF document text
    • http://apx-centre.ru/images/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/app-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/how-to-get-free-robux-gift-cards_GM431946152.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-stream_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/robux-sites_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • http://apx-centre.ru/images/coin-master-hack-version-apk-download_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • http://apx-centre.ru/images/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47E8 26212 bytes
SHA-256: 59d1e258fed761c57203ee9397de281d4438bdfacfabe8eb1462cc06a146ed08
font_01_sfnt_off000082dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82DD 3068 bytes
SHA-256: 0a91bc601ea022ebd8e3d2f41a62c3c291aaa03c5a0de9957a800a4c346dcdcb
font_02_sfnt_off00008d6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D6C 18944 bytes
SHA-256: 3e075e77f873d88a985ea69ac7fafb934745d76ebabdb09bc56e33f005972947

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