Malicious PDF — malware analysis report

Static analysis result for SHA-256 edd16dc516c8c64e…

MALICIOUS

PDF

45.6 KB Created: 2021-05-19 23:33:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8e4682cf5478626510261fbbbcedb8a7 SHA-1: dac89c29976d01e49b039e3e8a982cf9d5686fad SHA-256: edd16dc516c8c64ea4c7335575784a3198c422bd7405f8f4b8ee5ef6d2f313e0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector infrastructure, disguised as a 'free generator / game hack'. The document body and heuristics indicate a lure to download a file, likely a second-stage payload. While no scripts were explicitly extracted, the PDF format can embed JavaScript, and the presence of malicious links suggests an attempt to trick the user into downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/835599320/free-30-tiktok-likes-game-hack In PDF document text
    • https://elearning.min1bangkalan.com/__statics/gudangsoal/files/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • https://elearning.min1bangkalan.com/__statics/gudangsoal/files/free-coins_GM406889139.pdfIn PDF document text
    • https://elearning.min1bangkalan.com/__statics/gudangsoal/files/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://elearning.min1bangkalan.com/__statics/gudangsoal/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.min1bangkalan.com/__statics/gudangsoal/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.min1bangkalan.com/__statics/gudangsoal/files/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.min1bangkalan.com/__statics/gudangsoal/files/working-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.min1bangkalan.com/__statics/gudangsoal/files/roblox-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min1bangkalan.com/__statics/gudangsoal/files/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://elearning.min1bangkalan.com/__statics/gudangsoal/files/static-moonactive-net-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.min1bangkalan.com/__statics/gudangsoal/files/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min1bangkalan.com/__statics/gudangsoal/files/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • https://elearning.min1bangkalan.com/__statics/gudangsoal/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • https://elearning.min1bangkalan.com/__statics/gudangsoal/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://elearning.min1bangkalan.com/__statics/gudangsoal/files/coin-master-free-coins-generator_GM406889139.pdfIn PDF document text
    • https://elearning.min1bangkalan.com/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://elearning.min1bangkalan.com/__statics/gudangsoal/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min1bangkalan.com/__statics/gudangsoal/files/freespinandcoin_GM406889139.pdfIn PDF document text
    • https://elearning.min1bangkalan.com/__statics/gudangsoal/files/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.min1bangkalan.com/__statics/gudangsoal/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004600.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4600 28476 bytes
SHA-256: f95da2e2a7265b9695f755064e15a8d13cbe8291e19b416da80a2015407f2b47
font_01_sfnt_off00008719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8719 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off000090ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90FF 17800 bytes
SHA-256: 892a73d9b0cce33350f81b1f8a98a200d570ae983699f363951acb5d8623fe5b

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