Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d0813cfe6872b74…

MALICIOUS

PDF

35.1 KB Created: 2021-07-03 13:34:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 534d16b99e1e993a30f243957c4a8db3 SHA-1: 79028e0b70ea341deadf989f1b3d0957c83e3e19 SHA-256: 0d0813cfe6872b740ad6ba006941c5626b4e59c8674aa1c2efd6939ee0617f15
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple links to known malicious redirectors, specifically promoting 'free generator / game hack' lures for popular games. The primary malicious URL identified is http://netcdn.tw/app/406889139/coin-master-free-coins-and-spins-hack-game-hack. The document's content and embedded links strongly suggest a phishing or scam attempt designed to trick users into visiting malicious sites, likely for malware distribution or credential harvesting.

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-free-coins-and-spins-hack-game-hack In PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-20210-robux-on-roblox-2021-for-free_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/worst-client_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/where-can-i-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/robux-me-free_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-free-stuff-on-roblox-catalog-on-phone_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-hack-spins-app_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-roblox-tablet_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/hack-crack-for-coin-master-currency_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-domino-code-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-robux-2021-hack_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/roblox-jailbreak-speed-hack-update-codes-2021-yasser-gamingyt_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-hack-in-any-roblox-account_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/rbxboost-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/hspart-imahsimp-yhsbatch1p-pastebin-free-robuxtype-batch1q20212021shq_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/pingu-hack-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-robux-no-password_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_off000033ec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33EC 22472 bytes
SHA-256: 7a3646430dc7c4600b583eb966d20f04298431dbc48c0c3e99d06773fec53434
font_01_sfnt_off00006604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6604 18520 bytes
SHA-256: 29c1b28c0a710d6b876e8a0d8218f7449662a67bbf5932a86ad74a08bedf9ae4

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