Malicious PDF — malware analysis report

Static analysis result for SHA-256 640258b6e778be13…

MALICIOUS

PDF

35.1 KB Created: 2021-06-26 21:37:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 8aa670e624789c5ee9ad35db39cd7210 SHA-1: 5712435c84d8925cbf4e84305304aa8860627d46 SHA-256: 640258b6e778be13abfb7cb9e333ee2f7af46c2f4199da867a311e4aac188a77
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game currency and hacks to entice users. It contains multiple links, including one to a known malicious redirector at http://netcdn.co/app/431946152/free-robux-hacks-easy-2021-game-hack. The document's structure and embedded links suggest it is designed to lead users to potentially malicious websites, likely for further exploitation or credential harvesting.

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/free-robux-hacks-easy-2021-game-hack In PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/minecraft-free-android_GM479516143.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/case-clicker-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/free-roblox-accounts-lost-pin_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/how-to-get-any-roblox-high-school-car-for-free_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/roblox-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/free-roblox-game-card_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/hacks-roblox-the-streets_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/roblox-retail-tycoon-cheat-engine-how-to-get-money_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/guudinfo-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/free-robux-for-sale_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/free-robux-gift-card-codes-generator_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/roblox-tokyo-ghoul-bloody-nights-level-hack_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/free-roblox-cards-generator-username_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/roblox-robux-hack-no-human-verification-or-survey-2021_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_off0000314b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x314B 22268 bytes
SHA-256: e9bf4cabbc954dd0f5c6a35efdd5af0cd0478f9e2d201e0401ecab46c06eb1fd
font_01_sfnt_off000062c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C3 19468 bytes
SHA-256: 3b8dd2d4130101b15a08a31f393b5c9588f381dccaf9f317aa6e1dcc54d8e0be

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