Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a68750982b57ccd…

MALICIOUS

PDF

34.9 KB Created: 2021-06-25 15:17:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b8419a988bc17d6692d3d8a99e29b09b SHA-1: 6614be90d4f96edd527e0eda90a5b41348768ece SHA-256: 6a68750982b57ccd32ddce674ccb257dcd969102728972fbc98b3d3f3008060d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ML classifier strongly indicated maliciousness, and the document body contains numerous URLs promoting 'free exploits' and 'hacks' for games like Roblox and Coin Master. The presence of an external URI points to a download lure, likely attempting to deliver a second-stage payload. No scripts were extracted from this sample.

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/best-free-roblox-exploit-server-side-game-hack In PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/hack-de-roblox-robux-2021_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/how-to-hack-through-walls-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/roblox-rubax-hack_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-stuff-on-roblox-hack_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-robux-for-samsung_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-roblox-clothes-hack_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/roblox-jailbreak-god-mode-hack_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-roblox-hair-boy_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_off00002f8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F8D 22664 bytes
SHA-256: c32b95b42307326d4a48bbb5f63e94cb2b90e36d5cdc9a7e6c6c453b2fdcdf5d
font_01_sfnt_off00006276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6276 19336 bytes
SHA-256: 3f1ff7484c296ada1e3a15852acdd5aa190ce7f9fc09cf5239d8127097aba3ef

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