Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5a24bbcd0d10ccb…

MALICIOUS

PDF

35.1 KB Created: 2021-06-29 16:16:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 20cc6fb3448546ab32bd73d8e40581eb SHA-1: fdc798221ebae7e59d7abfa8668b3c1730b0ea14 SHA-256: c5a24bbcd0d10ccb90aa1bcd8116c3d72af9e0404c740203d9e7a551293e8de5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to 'free Robux' for the game Roblox, aiming to trick users into clicking a link. The primary link, http://netcdn.co/app/431946152/how-to-get-free-robux-on-roblox-2021-with-proof-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a potential for exploitation or redirection to a malicious site, likely leading to further malware download 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/how-to-get-free-robux-on-roblox-2021-with-proof-game-hack In PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/roblox-gift-card-codes-free-2021_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/game-action-aventure-magic-in-roblox-free_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/roblox-com-hack_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/free-domnis-roblox-youtube_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/games-that-give-free-robux-without-pass_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-2021-iphone_GM406889139.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/pokemon-go-free-spoofer_GM1094591345.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/hack-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/coin-master-spin-ml-link_GM406889139.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/my-roblox-gf-cheated-on-me_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/cheat-phantom-forces-roblox-2021_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/free-tiktok-followers-quora_GM835599320.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/how-to-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/coin-master-hack-app-for-ios_GM406889139.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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_off00002fb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB4 22256 bytes
SHA-256: ac1d97ba55d87da52f1daf7dbbfb95c0d454b15822502435fa5cc6b0bd4dd604
font_01_sfnt_off00006140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6140 20100 bytes
SHA-256: db7490c022353bae3b2c1f567183ee4f3ecf8373f7695b56972d24529436dfd5

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