Malicious PDF — malware analysis report

Static analysis result for SHA-256 890d613c05d5a2fd…

MALICIOUS

PDF

34.9 KB Created: 2021-06-18 11:35:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2aa1407fe3d04549eb7912d6aa1cb581 SHA-1: a51c15cc7b829196dbb162af46e302e6b3451455 SHA-256: 890d613c05d5a2fda279917c1a53c792c714264479768a20a6730365e79a1b94
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a malicious redirector, disguised as 'free generators' or 'game hacks' for popular games. The primary lure URL is http://netcdn.co/app/431946152/how-to-hack-money-systems-on-roblox-tycoons-game-hack, which is flagged as malicious. The document body and heuristics confirm the intent to redirect users to potentially harmful content, likely for further exploitation or malware delivery.

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.co/app/431946152/how-to-hack-money-systems-on-roblox-tycoons-game-hack In PDF document text
    • http://internetdeputy.com/images/free-roblox-girls-clothes_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/free-robux-copypasta_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/does-cheat-engine-work-on-roblox-vehicle-simulator_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
    • http://internetdeputy.com/images/everything-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • http://internetdeputy.com/images/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/give-free-robux_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/new-this-number-glich-gets-free-robux_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
    • http://internetdeputy.com/images/tiktok-fans-for-free_GM835599320.pdfIn PDF document text
    • http://internetdeputy.com/images/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/infinite-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/how-to-get-unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3069 22396 bytes
SHA-256: 9a973a54c7f04a8ab2a3fab06ca2e9c790c95445daee1629104f90c5ca255132
font_01_sfnt_off00006235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6235 19376 bytes
SHA-256: 54273e82fccd65bdb90dd254640b5c59625260c25ab00d7171df78c239bf83b5

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