Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cab45732737479b…

MALICIOUS

PDF

42.5 KB Created: 2021-05-11 20:33:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e02cfa55f35c06ac08751dac4d5584a0 SHA-1: 53cb1cda229c04f2ddb154452a75240e5cebc2e2 SHA-256: 3cab45732737479bdb21b276aaf09b66320e951ceb56f971f627e99bcec4d2ec
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free unlimited Robux' and directs users to a malicious URL. The embedded link, 'https://netcdn.xyz/app/431946152/how-to-get-free-unlimited-robux-game-hack', is likely intended to lead to a phishing page or malware download. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a social engineering attack aimed at tricking users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/how-to-get-free-unlimited-robux-game-hack PDF link annotation
    • http://elearningman2.man2palembang.sch.id/__statics/gudangsoal/files/what-are-points-for-in-roblox_GM431946152.pdfIn PDF document text
    • http://elearningman2.man2palembang.sch.id/__statics/gudangsoal/files/get-free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://elearningman2.man2palembang.sch.id/__statics/gudangsoal/files/free-robux-app_GM431946152.pdfIn PDF document text
    • http://elearningman2.man2palembang.sch.id/__statics/gudangsoal/files/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://elearningman2.man2palembang.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://elearningman2.man2palembang.sch.id/__statics/gudangsoal/files/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • https://elearningman2.man2palembang.sch.id/__statics/gudangsoal/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://elearningman2.man2palembang.sch.id/__statics/gudangsoal/files/roblox-font-free_GM431946152.pdfIn PDF document text
    • http://elearningman2.man2palembang.sch.id/__statics/gudangsoal/files/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • https://elearningman2.man2palembang.sch.id/__statics/gudangsoal/files/100-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elearningman2.man2palembang.sch.id/__statics/gudangsoal/files/coin-master-connection-lost-hack_GM406889139.pdfIn PDF document text
    • https://elearningman2.man2palembang.sch.id/__statics/gudangsoal/files/coin-master-free-500-spins-link_GM406889139.pdfIn PDF document text
    • https://elearningman2.man2palembang.sch.id/__statics/gudangsoal/files/how-to-get-free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elearningman2.man2palembang.sch.id/__statics/gudangsoal/files/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearningman2.man2palembang.sch.id/__statics/gudangsoal/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearningman2.man2palembang.sch.id/__statics/gudangsoal/files/hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://elearningman2.man2palembang.sch.id/__statics/gudangsoal/files/free-promo-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearningman2.man2palembang.sch.id/__statics/gudangsoal/files/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://elearningman2.man2palembang.sch.id/__statics/gudangsoal/files/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://elearningman2.man2palembang.sch.id/__statics/gudangsoal/files/minecraft-116-1-download_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048f0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48F0 24592 bytes
SHA-256: 83950cf51f4332ca75f6f4912106968ea3f8e25287db7e940e6cfbbb664e5ccf
font_01_sfnt_off00008185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8185 19096 bytes
SHA-256: 9b17e9a23becacda63dddbc7f165c1e9b21e0166e4f27ededabbca260bf2e523

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