Malicious PDF — malware analysis report

Static analysis result for SHA-256 a62f668d0c63bf6a…

MALICIOUS

PDF

34.0 KB Created: 2021-06-28 03:31:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3168b7f8326d31ab1f11f08bcc49d349 SHA-1: ff874faf658a7ddc0d58c25df33f74c29466cf75 SHA-256: a62f668d0c63bf6a828747425d78589865dd9786acafc90b5e704ca98fec2e33
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector, specifically http://netcdn.co/app/431946152/como-instalar-hack-roblox-game-hack. The document body and heuristics indicate a lure related to game hacks or generators, designed to trick users into clicking the malicious link. No scripts were extracted, but the presence of malicious links and the lure suggest a phishing or malware distribution attempt.

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.co/app/431946152/como-instalar-hack-roblox-game-hack In PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/coin-master-free-400-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/free-robux-sites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/free-spins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/noclip-sin-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/how-to-make-my-own-coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/free-robux-scam_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/how-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn 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_off0000310c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x310C 21400 bytes
SHA-256: c97ac1fc5d4af67fabe656dcfd04c5fcba9f69d810db33883b45e7e2c352e3ed
font_01_sfnt_off00005fb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB4 19020 bytes
SHA-256: 63b25615e23af8b8997138c60c64a1d8dac00e73e768745416aa7d76008cb3c2

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