Malicious PDF — malware analysis report

Static analysis result for SHA-256 89a4b8be600f2be5…

MALICIOUS

PDF

35.3 KB Created: 2021-06-29 05:23:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c5dfd0cff3f401b1401f55bddb1aed9e SHA-1: a14f7563effbf7b0708a7e4073b2c5bc1f7a94c3 SHA-256: 89a4b8be600f2be595d8fc1864fe876509b7dfdbae1ef2ee3ce7b4c9a49098df
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded links that redirect to malicious infrastructure, impersonating Facebook to lure users with promises of game hacks. The ML classifier and redirector heuristics strongly indicate malicious intent, likely to facilitate credential harvesting or a second-stage payload download. No scripts were extracted, but the document's structure and embedded URLs point to a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://netcdn.co/app/431946152/comment-hack-quelqu.
  • 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/comment-hack-quelqu In PDF document text
    • https://perpustakaan.itda.ac.id/repository/beyblade-roblox-beta-damage-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hacking-simulator-game-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hack-coin-pro-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-hacks-for-spins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/cube-eat-cube-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/bloxburg-free-no-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-money-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/como-descarar-roblox-hack-para-pc_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-roblox-codes-2021-november_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-apocalypse-rising-hack-script_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-urbis-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-roblox-exploit-executor_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-daily-free-spins-and-coins_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_off00003094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3094 23044 bytes
SHA-256: 8c95bfcfef5df076f97dc576afbbaed404273cb3ed78a9eeebc72b6a3c30f3e4
font_01_sfnt_off0000634f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634F 19552 bytes
SHA-256: 18b8651da4fcf25b4f876148d55180b8dca87ffb30be4bb1431302d3a6e56d17

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