Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9eb250732c43660…

MALICIOUS

PDF

42.5 KB Created: 2021-05-12 03:34:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 479b7c699e0ac25e20be658c61339039 SHA-1: abef97df529a073be2ec75e11452cc842eeb9542 SHA-256: c9eb250732c4366038d72a2450fe151ddadb893a6f2710102e10b339f46ad3bd
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

This PDF document was flagged as malicious by an ML classifier. It uses a ClickFix paste-and-run lure. 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 0.9971

Heuristics 5

  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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/479516143/universal-minecraft-converter-free-game-hack PDF link annotation
    • https://katalog.smkn1glagah.sch.id//repository/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-game-pack-with-google-play-coin-master_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/minecraft-anarchy-server-no-hacks_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/collect-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-hack-2021-link_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-spins-coinmaster_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-daily-bonus_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/fb-coin-master-hack_GM406889139.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_off00004c0d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C0D 24880 bytes
SHA-256: fcc4ec2b2c2aa64258162299dfcc61b3b6e8d19093d64bdfb07ac93b7b86e8d0
font_01_sfnt_off00008460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8460 18084 bytes
SHA-256: e9d0f0345694b9a79203755563a3dfebd4f00fdb0e59242a0f52e95bef3afb94

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