Malicious PDF — malware analysis report

Static analysis result for SHA-256 619272d9b78d39d0…

MALICIOUS

PDF

47.0 KB Created: 2021-06-03 05:39:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: caa601e5219b3e9c6b898a9b85109d23 SHA-1: 02f92b4973b002742cfab80e3405f888e56f95c7 SHA-256: 619272d9b78d39d0b324458e26d3418f05789c4b24f06eea0742b54683d2831f
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document functions as a link farm, directing users to various websites disguised as game hack generators. The presence of a 'clipboard command execution lure' suggests an attempt to trick users into executing malicious commands. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 6

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.online/app/479516143/114-4-hacks-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/without-pokemon-go-free-download_GM1094591345.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/robux-for-kids_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-spin-coin_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/does-coin-master-hack-work_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-roblox-hair_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hack-client_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-minecraft-wallpaper_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://www.freenom.comHeyIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51D6 25784 bytes
SHA-256: 4419c6842089a966c71ac03ed12af3dc92aef5318da261868f0d827fd765f862
font_01_sfnt_off00008c35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C35 3092 bytes
SHA-256: 1aa0e4457f2fdbd20c643bc065edafaa683fd9dc2930c01c4492bce0fd9a7f02
font_02_sfnt_off000096e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96E1 17684 bytes
SHA-256: adae08d9b008a520cb66bc6de6376e80f8d95342f8060c976aee239a133cf7a5

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