Malicious PDF — malware analysis report

Static analysis result for SHA-256 de4ec6d415b79227…

MALICIOUS

PDF

43.2 KB Created: 2021-05-12 03:16:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 31ea0b2e08d5e014ffe42cd1ebc66202 SHA-1: 68ed3e4f1ae6d1ebd1d08abc93a9d6eb7d1634a2 SHA-256: de4ec6d415b79227f3af52cae2fc4d85e237a7b5ea81d20540ef716d4948df45
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as game hack generators. The primary lure is 'How To Get Robux On Phone', directing users to a URL associated with malicious infrastructure. The document's structure and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content or further malicious downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/how-to-get-robux-on-phone-game-hack In PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-fun-hack_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/robuxglobalcom_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/instagram-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-getting-hacked_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_003_off00004b4e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B4E 25672 bytes
SHA-256: dc6cc8f5cd18573b9caea500d0aa9382c7d24ec1de52f4b1ddf06c3114508a92
font_01_sfnt_off00008638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8638 18440 bytes
SHA-256: 9dbfb1b9e6352e67373853b36194919d875182936c6781c0eccbeab0d11d3af5

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