Malicious PDF — malware analysis report

Static analysis result for SHA-256 c97fbe1e1a7f8d6d…

MALICIOUS

PDF

42.3 KB Created: 2021-05-13 17:05:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 321ac2661bb4f0c5ce363944e6cd2532 SHA-1: 3820a831a682094456f2b6fa13a15dd20b66ab26 SHA-256: c97fbe1e1a7f8d6d96ccb4b4f6aedb04a578d8aff0b669c64ae933c61d47177a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites that are identified as malicious redirectors, specifically luring users with promises of game hacks and free currency. The document body, though partially corrupted, contains references to 'Robux' and 'game hack', reinforcing the lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/how-you-get-robux-game-hack In PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/clients-minecraft_GM479516143.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/can-you-give-me-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/instantrobux_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_off0000497a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x497A 25284 bytes
SHA-256: 868fe49d00616c0523c3e85a14777c41004821d52a125ef777b2ed7885bb94c3
font_01_sfnt_off000082e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82E5 18280 bytes
SHA-256: da9d84f1cd45b5ac6ec9aefdd652d6bdce11e542494ae2da0581909ee8565979

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