Malicious PDF — malware analysis report

Static analysis result for SHA-256 f49daf3355a0cd04…

MALICIOUS

PDF

35.3 KB Created: 2021-07-06 15:00:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e17430502f4b588975aa1c9447c34933 SHA-1: f62b62df7dcf3bc8c9e645bce7b920147158cb1b SHA-256: f49daf3355a0cd04f0e96f95bea30338a0d6ac0a2b15d3b32eaca59627111c20
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and text referencing 'Free Robux Codes' and 'game hacks', designed to lure users into clicking malicious links. The primary URL, http://netcdn.tw/app/431946152/free-robux-codes-2021-not-used-game-hack, is identified as a malicious redirector. This suggests the document's purpose is to lead users to potentially malicious websites for phishing or malware distribution, likely initiated via a spearphishing attachment.

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.tw/app/431946152/free-robux-codes-2021-not-used-game-hack In PDF document text
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/roblox-fe-music-gui-hack_GM431946152.pdfIn PDF document text
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/roblox-hacking-simulator-codes_GM431946152.pdfIn PDF document text
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/roblox-codes-for-robux-free_GM431946152.pdfIn PDF document text
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/gainblox-gg-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/free-roblox-script-hub_GM431946152.pdfIn PDF document text
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/star-code-roblox-free_GM431946152.pdfIn PDF document text
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/roblox-how-to-buy-stuff-for-free_GM431946152.pdfIn PDF document text
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/what-is-the-cheat-t-get-robux_GM431946152.pdfIn PDF document text
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/roblox-lua-script-gear-giver-hack_GM431946152.pdfIn PDF document text
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/free-dantdm-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/hacks-gratis-roblox_GM431946152.pdfIn PDF document text
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/hack-robux_GM431946152.pdfIn PDF document text
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/fly-hack-download-for-roblox-survivor_GM431946152.pdfIn PDF document text
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/roblox-hack-gamer_GM431946152.pdfIn PDF document text
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/how-can-you-hack-robux_GM431946152.pdfIn PDF document text
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/how-to-speed-hack-on-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/citizen-hacks-roblox-jailbrea_GM431946152.pdfIn PDF document text
    • https://elearningmts.almatuq.sch.id/__statics/gudangsoal/files/how-to-hack-dangongusee-roblox_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_off0000326f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x326F 22072 bytes
SHA-256: 1c04f218953577c2b9e866928234a817c8502cadb28a7d6a8ba5ff1c297e2f0c
font_01_sfnt_off0000638a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x638A 19396 bytes
SHA-256: 25d7bfe460846437b60ba32f00233ff0583bbe4639522c561b722c1edc24abf6

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