Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dd01901bd7ce900…

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 19:16:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: c4337681c6e166f0b197adafa4e1d655 SHA-1: a2a367d741857ad5d0bdb6117dc4c87d9e0f0d12 SHA-256: 5dd01901bd7ce9009db678091c3a6e401de2c253a8854baf99e3b45c0597ef7e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'Robux Hack' and directs users to a URL associated with malicious redirector infrastructure. The document body and embedded URLs reinforce this theme, suggesting a phishing attempt to trick users into visiting a potentially harmful website. No scripts were extracted from this sample.

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/robux-hack-sin-descargar-nada-game-hack In PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/is-java-minecraft-free_GM479516143.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/red-valk-roblox-free_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/coin-master-support_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/free-promocodes-that-give-you-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/how-to-get-free-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/free-ninja-masks-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/how-to-find-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/robux-download_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/coin-master-free-spins-activegamer_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/www-roblox-free-download_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/pokemon-go-free-pokeballs-2021_GM1094591345.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/prison-break-16-hack-script-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/free-really-working-no-password-no-verify-robux-generator_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/roblox-free-download5mio_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/add-free-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_off00003233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3233 22544 bytes
SHA-256: b257549094c591e8e4b2adcf3f29bdb02d1e5d1922a5154f2d052bb2a9591d59
font_01_sfnt_off00006477.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6477 19184 bytes
SHA-256: 80f4d81cf5cade330a84643253040d565db31ac551f158e2d0852bb399fcdaca

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