Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf2f1ec6fc06cb77…

MALICIOUS

PDF

34.8 KB Created: 2021-06-28 05:00:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8bb0a72892687a5161828b938745dd23 SHA-1: d6cf08bdf22b05f64cf144946e045e76dda0607d SHA-256: cf2f1ec6fc06cb773d75e124b2b56191c7371e19664663c54a6e861c4ce2d5f9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as 'game hacks' and 'free generators'. The primary lure, 'Hack Roblox For Robux 2021', directs users to http://netcdn.co/app/431946152/hack-roblox-for-robux-2021-game-hack, which is identified as malicious infrastructure. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting these sites, likely leading to further malware downloads or phishing attempts.

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/hack-roblox-for-robux-2021-game-hack In PDF document text
    • http://daskrimti-jabar.web.id/library/repository/bloxawards-free-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/link-coin-master_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/rbx-sites_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/life-hacks-for-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-roblox-account-giveaway-2021_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/is-the-robux-hack-safe_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-free-unlimited-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/robux-cheat-codes-2021-pc_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_off000031d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31D0 21976 bytes
SHA-256: e6152589e1ea69623f092f4ce4e3cf976d1bcce586cb9ec922730888ae5d6220
font_01_sfnt_off0000621c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x621C 19360 bytes
SHA-256: eb1ad9eb9e031669bb276cb5ec09be03538529493ac998bdbfd46bdc822cea79

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