Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1eeb38fb79f1c86…

MALICIOUS

PDF

33.3 KB Created: 2021-07-01 18:49:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 54ff2196e1760891713fd3cd375dc980 SHA-1: c2918197edd59ffd884389bfb5360dfc5b65fefc SHA-256: a1eeb38fb79f1c86935caa42b40116e395ffdd7a9dfec03dc2ef5e539c9620ff
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to a known malicious redirector, promising free game currency and hacks. The document body explicitly contains the malicious URL and a call to action, indicating a phishing or scam attempt. No scripts were extracted, but the presence of malicious links and the lure suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/free-robux-easy-cheat-game-hack In PDF document text
    • http://elib-s2.ubl.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/flamingo-skin-but-its-free-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-do-you-get-builders-club-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-look-cool-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-promo-codes-list-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-robux-easy-and-free_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/proof-how-to-steal-hack-accountson-roblox-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/hacker-para-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-free-robux-for-pc-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/i-hacked-lolpuggys-roblox-account-ha_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/hccb-baseball-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-hack-all-game-gun_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/armored-patrol-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-jordan-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-robux-hack-generato_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/hack-roblox-6-15-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-tiktok-video_GM835599320.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_off00002ab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB0 22700 bytes
SHA-256: 2c1af0166fd92801907094b02688c762d58448923b9803fd98d9e7d695154832
font_01_sfnt_off00005d28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D28 19164 bytes
SHA-256: 38bcbc9fda7b76342ace9e36562526ad6e4336e22a8b899696d98bd2859a47cb

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