Malicious PDF — malware analysis report

Static analysis result for SHA-256 148a6ba83ac586b2…

MALICIOUS

PDF

35.1 KB Created: 2021-07-05 07:35:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 34820a85050fa92d6f8839651a078b46 SHA-1: e1050a3d524164db89bc1624626ea2b1c99a625f SHA-256: 148a6ba83ac586b24a2501e35cae5d49c4336500d2cfac09724a43eaed98cdcc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free spins to trick users into clicking malicious links. The primary link redirects to known malicious infrastructure, indicating a phishing or scam attempt. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/406889139/reddit-coin-master-free-spins-game-hack In PDF document text
    • http://allcenterdistribuidora.com.br/files/websites-for-robux_GM431946152.pdfIn PDF document text
    • http://allcenterdistribuidora.com.br/files/how-to-become-famous-on-tiktok-free_GM835599320.pdfIn PDF document text
    • http://allcenterdistribuidora.com.br/files/roblox-redeem_GM431946152.pdfIn PDF document text
    • http://allcenterdistribuidora.com.br/files/coin-master-daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://allcenterdistribuidora.com.br/files/how-to-join-the-builders-club-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://allcenterdistribuidora.com.br/files/roblox-cheat-engine-safe_GM431946152.pdfIn PDF document text
    • http://allcenterdistribuidora.com.br/files/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://allcenterdistribuidora.com.br/files/roblox-cheat-tool-download_GM431946152.pdfIn PDF document text
    • http://allcenterdistribuidora.com.br/files/how-to-hack-ppl-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://allcenterdistribuidora.com.br/files/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://allcenterdistribuidora.com.br/files/hack-para-roblox-reign-teleports-666-y-mas-tutorial_GM431946152.pdfIn PDF document text
    • http://allcenterdistribuidora.com.br/files/exploit-for-roblox-2021-cheat-engine_GM431946152.pdfIn PDF document text
    • http://allcenterdistribuidora.com.br/files/free-roblox-hair-boy_GM431946152.pdfIn PDF document text
    • http://allcenterdistribuidora.com.br/files/how-to-make-robux_GM431946152.pdfIn PDF document text
    • http://allcenterdistribuidora.com.br/files/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • http://allcenterdistribuidora.com.br/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://allcenterdistribuidora.com.br/files/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
    • http://allcenterdistribuidora.com.br/files/coin-master-working-hack_GM406889139.pdfIn PDF document text
    • http://allcenterdistribuidora.com.br/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://allcenterdistribuidora.com.br/files/how-to-earn-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
stream_002_off0000326a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x326A 23060 bytes
SHA-256: 78ab46a04b851bfa2b027af1ce794b36b97846ee33f862da688ffaa38d889fde
font_01_sfnt_off0000666c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x666C 18348 bytes
SHA-256: 3fe39b2930b076df7c33fd3c1127f420799a62b8c1a063cb4499e2e561575943

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