Malicious PDF — malware analysis report

Static analysis result for SHA-256 43507ea8b4d15d78…

MALICIOUS

PDF

35.1 KB Created: 2021-07-08 23:32:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b9b645a8bdca8695e13b3f8c58050da9 SHA-1: f89aabecc4f7ee223e52f44a98bcfd16f1920249 SHA-256: 43507ea8b4d15d789fac2eaec3703d20dd1843e8792d46d73d27fea08454e59f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/406889139/village-3-coin-master-game-hack PDF link annotation
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/alphalife-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/robux-xyz_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/free-roblox-codes_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/free-robux-app-for-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/free-roblox-followers_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/comment-avoir-des-robux-gratuit-hack_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/roblox-exclusive-free-items_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/how-to-hack-back-a-roblox-accunt_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/coin-master-mod-apk-latest-version-free-download_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/free-robux-hack-2021-november_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/coin-master-get-free-cards_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/free-spins-coin-master-links-blogger_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/can-pokemon-go-free-evolve-after-trade_GM1094591345.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/como-conseguir-fuerza-en-boxing-simulator-2-roblox-cheat_GM431946152.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
font_00_sfnt_off000033ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33AB 22836 bytes
SHA-256: f9ac6fdff04eb444d428bd5c2745a4cea1c2cc2473b6836dd366207b4ae726e6
font_01_sfnt_off000066c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66C8 18216 bytes
SHA-256: 58e6ca71e80361c97c12faabc02ae8553130ffbaaef78b9f7fcf12d765986ed3

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