Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ee5a57b5ccaef6e…

MALICIOUS

PDF

42.9 KB Created: 2021-05-14 18:34:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: fd2cb7388ec5a76d32481572b82922cd SHA-1: 34c45ed5b73bd67b0854c8817d01d864e46039aa SHA-256: 0ee5a57b5ccaef6eef93587b99fc1553059bb5d07ef145b1db38e85ff5b91481
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/minecraft-noob-vs-pro-vs-hacker-vs-god-game-hack PDF link annotation
    • http://srisaket.nfe.go.th/UserFiles/File/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/minecraft-client_GM479516143.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coinmasterhack-club_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/mcpe-client_GM479516143.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/minecraft-free-download-ipad_GM479516143.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-cheats-free_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_off00004bfa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BFA 25272 bytes
SHA-256: 768af07d58048817738e01a3a52c1fdf1133e850959c7ce15564ec1f8fc4787b
font_01_sfnt_off000084cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84CC 18500 bytes
SHA-256: 35163f059b41a7a3602679841a335cd83055ee85c0a72342166b4475486ea273

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