Malicious PDF — malware analysis report

Static analysis result for SHA-256 20c4a4736dbff05b…

MALICIOUS

PDF

36.3 KB Created: 2021-07-06 12:56:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c288663caecf3364f4f266d8288aa4cc SHA-1: 8684c74fc50a1c2f51632b7c10ef90a36d08354e SHA-256: 20c4a4736dbff05b6b7d97ae7c2a62f01ba38f43da713d113d428b36dc0adac5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks and cheats. The document body and extracted URLs strongly suggest a lure to trick users into visiting these sites, likely for further malware delivery or phishing. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure indicate a malicious intent to redirect users to potentially harmful content.

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/431946152/roblox-hacks-and-cheats-game-hack In PDF document text
    • http://slims.abulyatama.ac.id//repository/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/bloxburg-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-hack-sans-verification-humaine_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-artmoney-robux-hack_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-free-candy-van_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-use-cheat-engine-on-roblox-2021-67_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/dinosaur-simulator-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/hack-roblox-pc-youtube_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/system48-roblox-hack_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-code-robux-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-robux-no-human-verification-no-survey_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_off000035d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35D5 22820 bytes
SHA-256: bfe854fe7669ae89271a37fe0ac74eaac237d435b49d21435fb0fa6195953ab7
font_01_sfnt_off000068bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68BD 19100 bytes
SHA-256: 964942e37439f8f9ab640eaa6d4c9b22aea120d806056d36c6a4670d34d844b2

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