Malicious PDF — malware analysis report

Static analysis result for SHA-256 eebc97798897821e…

MALICIOUS

PDF

34.8 KB Created: 2021-07-06 00:21:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a869a9e2fb7b0ec8b63d4a59b9a108f1 SHA-1: 7b75085ccb0c61904e2f1b8eaa66c76463febc88 SHA-256: eebc97798897821e2bfe39b09c307803f6921c86cc21cf5f055e24fad9c9b23e
142 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, 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 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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 http://netcdn.tw/app/406889139/free-spins-coin-master-twitter-game-hack PDF link annotation
    • http://perpus.masda.ac.id//repository/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/www-roblox-com-free-play_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hot-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/avatar-de-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-stuff-on-roblox-without-no-hacking_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-hack-apk-ios_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-jailbreak-infinite-fire-truck-hack-farm_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/generator-for-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-followers-no-human-verification-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-minecraft-com_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-stuff-on-roblox-xbox-one_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-do-you-get-robux-for-free-2021_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_off0000309f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x309F 23248 bytes
SHA-256: 0803a058374d70916685023983685997b18222230e1590b44d606d56b5243b27
font_01_sfnt_off00006509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6509 18336 bytes
SHA-256: fad18ba24583aad0ada5315d9085d0f54c571018171a48420ec776ee5c3fad25

Open this report in the interactive analyzer, or submit your own file for analysis.