Malicious PDF — malware analysis report

Static analysis result for SHA-256 59031fb45787b9a2…

MALICIOUS

PDF

35.4 KB Created: 2021-06-26 18:08:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 119ed9757a44f95b31e614a2cd4371c3 SHA-1: 3358bee00d23fd87a1f65beab90f8023bb7b97f0 SHA-256: 59031fb45787b9a28ec778c5993e42432f947fb122ac91a758143fd04c141329
160 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks and free currency. The document body explicitly contains the URL 'http://netcdn.co/app/431946152/how-to-hack-another-player-on-roblox-game-hack', which is flagged as a malicious redirector. No scripts were extracted, but the presence of embedded links and the nature of the lure suggest a phishing or social engineering attack.

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-hack-another-player-on-roblox-game-hack In PDF document text
    • http://jbtlive.com/assets/CKImages/files/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/50-free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/easy-points-gg_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/free-robux-generator-may-2021_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/how-to-get-into-bloxburg-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/pubg-uc-or-ag_GM1330123889.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/get-free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/free-robux-generator-codes_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_off000030f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F2 22840 bytes
SHA-256: 310515af58b5f5912074498225cfd5306e31d4c76f1c2ad2d18451124aaa48ed
font_01_sfnt_off0000640b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640B 19424 bytes
SHA-256: c5b0de12e486f1967e9aade878ff11509fea583d86d1f3070f41b6c7d8de5f38

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