Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cc021425a43d69e…

MALICIOUS

PDF

44.9 KB Created: 2021-06-04 04:06:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e5e02b1fefb4221289f3e7ebc5cc574a SHA-1: 1d5314e72f87dbc66a179128e46cf331ec058434 SHA-256: 7cc021425a43d69e639348b77f2964f43d1c79abf95d175bdd98296424dc1b88
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 0.9865

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.online/app/479516143/minecraft-dungeons-free-game-hack PDF link annotation
    • http://oca.undil.tl/repository/minecraft-pe_GM479516143.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-free-spin-link-today-50_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-cheat-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-role-in-coin-master_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/optifine-pe_GM479516143.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-new-free-hairs_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/pokemon-go-5-free-raid-pass_GM1094591345.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • https://code.giftcards.comIn 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
stream_004_off00005295.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5295 25676 bytes
SHA-256: 92ef9d99305edf8e2f893cd8d80b2a98110b5729bcd588c5e55708e0b3938f94
font_01_sfnt_off00008d15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D15 18304 bytes
SHA-256: f6a577bc3f56294164eedaca4aa626844c61f0adb940d643d6f78e4abd993284

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