Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dc167140ee95fb2…

MALICIOUS

PDF

34.8 KB Created: 2021-06-29 08:20:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7c62ceff1a3da1fb330fe12e0b40d6b0 SHA-1: 2593ca58479558ecf389c065d22ef85afe5c31ce SHA-256: 0dc167140ee95fb28a423ce37dfe0dcdb19eb33ac115b7a254afcdf3774b6e1d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/free-robux-promo-cides-game-hack. This redirector is likely used to deliver a secondary payload or phish for credentials. The document body and embedded links suggest a lure for free game currency or hacks, a common social engineering tactic.

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/free-robux-promo-cides-game-hack In PDF document text
    • http://www.sbairs.com/datas/files/free-nike-shirts-roblox_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/roblox-deadzone-remade-hack_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-get-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/get-robux-free-no-hack_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/roblox-robux-free-2021-en-fr_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/spin-link_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/exploit-script-executor-free-download-roblox_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/simplysarc_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coinmasterfreespinlink_GM406889139.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_off000032a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A9 21540 bytes
SHA-256: 5dcfa0a733d76c03c22075cd46d84c3dde54e767d84a67dd800ef6e36b4f1874
font_01_sfnt_off000061f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F0 19424 bytes
SHA-256: ed908b61b42e1a01546c0d98366935487c320eda8389f97154490665975c9275

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