Malicious PDF — malware analysis report

Static analysis result for SHA-256 deaf532993f85c63…

MALICIOUS

PDF

35.1 KB Created: 2021-07-05 12:58:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0d5b35495ce21e060f74171d44ba2637 SHA-1: 61b506ebc649916dce405e49b48e4baf6e0baca7 SHA-256: deaf532993f85c635d68547ba1485cd719c3905a65cc6f05c6175d5375c8a585
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on a 'free generator' or 'game hack' URL. This URL, http://netcdn.tw/app/431946152/roblox-free-items-2021-game-hack, is identified as malicious redirector infrastructure. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful sites, likely for credential harvesting or malware delivery.

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/roblox-free-items-2021-game-hack In PDF document text
    • https://elearning.mtsnkotabatu.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotabatu.sch.id/__statics/gudangsoal/files/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotabatu.sch.id/__statics/gudangsoal/files/how-to-get-animation-pack-for-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotabatu.sch.id/__statics/gudangsoal/files/robux-infini-cheat-engine_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotabatu.sch.id/__statics/gudangsoal/files/roblox-promo-code-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotabatu.sch.id/__statics/gudangsoal/files/is-the-free-robux-video-real-from-vixter_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotabatu.sch.id/__statics/gudangsoal/files/pubg-uc-app-download_GM1330123889.pdfIn PDF document text
    • https://elearning.mtsnkotabatu.sch.id/__statics/gudangsoal/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkotabatu.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-spin-ios_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkotabatu.sch.id/__statics/gudangsoal/files/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkotabatu.sch.id/__statics/gudangsoal/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkotabatu.sch.id/__statics/gudangsoal/files/toolbox-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnkotabatu.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotabatu.sch.id/__statics/gudangsoal/files/real-roblox-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotabatu.sch.id/__statics/gudangsoal/files/robux-free-no-pay-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotabatu.sch.id/__statics/gudangsoal/files/nopde-cheat-engine-64-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotabatu.sch.id/__statics/gudangsoal/files/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkotabatu.sch.id/__statics/gudangsoal/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkotabatu.sch.id/__statics/gudangsoal/files/minecraft-com-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnkotabatu.sch.id/__statics/gudangsoal/files/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.roblox.com/.IIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A1 21984 bytes
SHA-256: d5a78aa636bf4d62e374c973d134bbd411cb6df5a3aee79eec9ef46170dbfe4f
font_01_sfnt_off0000630f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630F 19416 bytes
SHA-256: a6079297a4f3312fdaf61b9e539ac17decd7e7bd8bb07ce2c802050efbe31670

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