Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8ecf8a63035e246…

MALICIOUS

PDF

35.5 KB Created: 2021-07-04 22:14:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: ecb559f62d880aabdb230462db21f8a8 SHA-1: a501aa555d9654865b830bd5ef1253f96c0dc005 SHA-256: f8ecf8a63035e246a5b043469dabe433f4737d374169256520117cd5b0399078
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links designed to lure users into clicking on what appear to be game-related hacks or generators. The primary link directs to a known malicious redirector infrastructure, and other links point to an IP address hosting various PDF files with similar lure themes. The presence of these links and the ML classification strongly suggest an attempt to deliver a malicious payload or redirect users to a phishing or malware site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/406889139/coin-master-free-spins-daily-2021-game-hack In PDF document text
    • http://111.68.26.74/widyapustaka/repository/claimrbx-free-robux_GM431946152.pdfPDF link annotation
    • http://111.68.26.74/widyapustaka/repository/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/coin-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-smoke-roblox-id_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-super-noob-obby-cheats_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-robux-hack-with-proof_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-free-gamepass-hack_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/are-there-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/coin-master-admin-free-spins_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-old-avatar_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-robux-by-roblox-robloxcom_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-to-get-any-hat-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-robux-no-scam_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_off00003219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3219 22988 bytes
SHA-256: ac9d34581b74252e65f4e97b0feec6642829543250145083d638cabb252550cb
font_01_sfnt_off000065c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65C9 19000 bytes
SHA-256: b814766d9c7402c53a67f950003b037573ebc2ab6a90739559792a4ced8a8c51

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