Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7249c916f094beb…

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 15:04:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 5c5eaf5e38de44f0167578d6f8977a5a SHA-1: c861cabf2f3f2d00aedb8d528899a6f2c9783ad2 SHA-256: a7249c916f094bebe19a531409bc0ce07c2a5c3bb02c67779a2cdf19152ec808
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector infrastructure, specifically promoting 'free Robux' or game hacks. The document body and extracted URLs strongly suggest a social engineering lure designed to trick users into visiting potentially harmful websites. No scripts were extracted, but the presence of malicious links and the lure indicate a phishing or scam 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.tw/app/431946152/how-do-u-get-free-robux-2021-game-hack In PDF document text
    • https://elearning.mtsn6tanahdatar.sch.id/__statics/gudangsoal/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6tanahdatar.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6tanahdatar.sch.id/__statics/gudangsoal/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn6tanahdatar.sch.id/__statics/gudangsoal/files/get-free-robux-by-doing-nothing_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6tanahdatar.sch.id/__statics/gudangsoal/files/how-to-download-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6tanahdatar.sch.id/__statics/gudangsoal/files/roblox-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6tanahdatar.sch.id/__statics/gudangsoal/files/free-assassin-coins-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6tanahdatar.sch.id/__statics/gudangsoal/files/how-to-hack-a-persons-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6tanahdatar.sch.id/__statics/gudangsoal/files/tiktok-likes-for-free_GM835599320.pdfIn PDF document text
    • https://elearning.mtsn6tanahdatar.sch.id/__statics/gudangsoal/files/google-give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6tanahdatar.sch.id/__statics/gudangsoal/files/jailbreak-robloxcom-cheats_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6tanahdatar.sch.id/__statics/gudangsoal/files/fre-robux-today_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6tanahdatar.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox-groups_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6tanahdatar.sch.id/__statics/gudangsoal/files/braddzy-roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6tanahdatar.sch.id/__statics/gudangsoal/files/free-wings-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6tanahdatar.sch.id/__statics/gudangsoal/files/reddit-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6tanahdatar.sch.id/__statics/gudangsoal/files/minecraft-maps-pe-free-download_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn6tanahdatar.sch.id/__statics/gudangsoal/files/roblox-promo-code-hack-script_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6tanahdatar.sch.id/__statics/gudangsoal/files/how-do-you-hack-admin-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6tanahdatar.sch.id/__statics/gudangsoal/files/great-roblox-hacks_GM431946152.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_off0000304f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x304F 22372 bytes
SHA-256: a76e97541100437b1ba79efd4bb39700d71eec129af89362eeb3f65122896357
font_01_sfnt_off0000622e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x622E 19556 bytes
SHA-256: ee909949778bcc1eaeaae663f07e5a0770d7aed4eef67476ef7171e54895eba2

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