Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c0d77516978b54b…

MALICIOUS

PDF

55.6 KB Created: 2021-05-10 23:48:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: df38cb928404602039ef93de237f4e37 SHA-1: acef0359a8e166a67f4dab5ea3e4ee3c8d4cd3c2 SHA-256: 9c0d77516978b54b8d17268cf9094c5eae302d526140ab274f538ca3ec34c94c
160 Risk Score

Malware Insights

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

The PDF document contains an external URI pointing to a game hack download, and the ML classifier flagged it as malicious. The presence of a visual download button further supports the lure, indicating the document's purpose is to trick the user into downloading a potentially malicious second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8685

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 https://netcdn.xyz/app/479516143/wurst-minecraft-game-hack In PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/coin-master-real-hack_GM406889139.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/roblox-old-avatar_GM431946152.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/roblox-2021_GM431946152.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/coin-master-hack-apk-no-survey_GM406889139.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/how-to-use-redstone_GM479516143.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/is-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/free-minecraft-server-hosting_GM479516143.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bf3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BF3 31104 bytes
SHA-256: 40352f5eae2e1f81e1304caf0d9c3aea36d397fb512fc89c20b75d588f4df4b0
font_01_sfnt_off00009049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9049 8092 bytes
SHA-256: 9ba0df8aceec696c8b9c20c264edb979dfbdd27bd9512fc9794176299746e8d5
font_02_sfnt_off0000a9f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9F0 4232 bytes
SHA-256: ab6320ab342704d2c5943abfba82ed4837bf2da871c91621741fd4cfd15c6ed5
font_03_sfnt_off0000b87d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB87D 17904 bytes
SHA-256: fe2be4bfd964b3268c312eb0b249b51bf809c15fdb0694b3c785ca9563b07e04

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