Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1f393acb9a00f44…

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 05:35:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3a53e054590c247c7af18fe63c47cf17 SHA-1: acdeec4a16deaabf1154718afb8856ee65f41c16 SHA-256: e1f393acb9a00f44a34d3c5cf7b9d9b4de277fd80a96fa006a53cdbdd288d497
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one identified as a malicious redirector, that promise game hacks and free currency. The primary lure is the URL http://netcdn.tw/app/406889139/coin-master-jackpot-hack-game-hack, which is designed to trick users into downloading further malicious content or visiting scam pages. The document's structure and content strongly suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/coin-master-jackpot-hack-game-hack In PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-wings-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/village-4-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-obc-on-roblox-working_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-robuxrar_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-no-generator_GM406889139.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/roblox-extreme-hack_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/robux-color-glitch-hack_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.kpu-gianyarkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn 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_002_off000031a3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31A3 22508 bytes
SHA-256: 92447d6da437c47050a4a3f1fd2b72dde59452807eabd86bfb2f517d46ff84d9
font_01_sfnt_off000063de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63DE 18344 bytes
SHA-256: cead3baa2d1d10a086482c84263685540bbf4bc76bc798cce3a71f7b95e822da

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