Malicious PDF — malware analysis report

Static analysis result for SHA-256 f540718b79e9b2df…

MALICIOUS

PDF

35.6 KB Created: 2021-06-18 17:29:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f06ca184538ba6262274342c4c8c081f SHA-1: 6afe8445b3999102266830ce04a20b36acb2bdc1 SHA-256: f540718b79e9b2df0bd5abd341d78e0428b419e9b5981f1f27caef427ba469ac
160 Risk Score

Malware Insights

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

The PDF document contains lures for free game currency and hacks, specifically mentioning 'free Robux' and 'game hack'. It embeds a URL that is flagged as a malicious redirector, designed to lead users to potentially harmful content. The document body and heuristics indicate a phishing or scam attempt to trick users into visiting the malicious URL.

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.co/app/431946152/how-to-get-free-robux-using-javascript-game-hack In PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/cool-roblox-skins-that-are-free_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/hack-booga-roblox_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/robuxfree-con_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/how-to-get-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/robux-hacks-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/roblox-script-executor-free-2021_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coinmasterdailyfreespins-com_GM406889139.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/roblox-dino-cheat_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/wurst-commands_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/how-to-get-2021-robux-for-free_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
font_00_sfnt_off0000314d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x314D 22900 bytes
SHA-256: 29abe6feafbed782d1cf125db5cf5d37acbd2a6fb58ec9e9e65e933f07f02d3e
font_01_sfnt_off000064c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C1 19560 bytes
SHA-256: 4151c55a454c49fcb6d5dc58949a7b2ba798a9a9af913ba5165bd438a9669ddd

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