Malicious PDF — malware analysis report

Static analysis result for SHA-256 748f67b382a62f75…

MALICIOUS

PDF

36.4 KB Created: 2021-07-08 11:05:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c48a2b8eac1827d98c7e6a4c06053a79 SHA-1: d7064122abd7bfd9e901de67234d1e09e5a26dc7 SHA-256: 748f67b382a62f7523569cafaf991799cbd61239ee36ad8e0517b47d942d88f3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a lure for a "free Robux generator" which redirects to the malicious URL http://netcdn.tw/app/431946152/how-to-get-free-robux-generator-game-hack. This URL is flagged as a redirector for game hacks, indicating a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious. Although no scripts were extracted, the PDF structure and embedded URLs suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-to-get-free-robux-generator-game-hack PDF link annotation
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/free-minecraft-account-and-password-2021_GM479516143.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-in-a-game-no-password_GM431946152.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/roblox-red-shirt-free_GM431946152.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/pokemon-go-free-cheats_GM1094591345.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/roblox-pics_GM431946152.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/free-robux-for-roblox-without-human-verification_GM431946152.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/free-spin-coin-master-app-download_GM406889139.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/minecraft-free-download-android-apk_GM479516143.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-ios_GM406889139.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/comment-devenir-hacker-sur-roblox_GM431946152.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/free-robux-inspect-element-2021-pastebin_GM431946152.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/roblox-how-to-cheat-in-currency-in-games-2021_GM431946152.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-human-verification-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_off000036c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36C4 22764 bytes
SHA-256: 7698f041219d939633c78872a2c7c70534cfc327d32ba32fa9b6ffc10596d150
font_01_sfnt_off00006987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6987 18984 bytes
SHA-256: 9ace3a26ef8593b997a2527bb5fc552eafd0119b2772e901bbb9c059dfbe5502

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