Malicious PDF — malware analysis report

Static analysis result for SHA-256 65f61b2bc3585424…

MALICIOUS

PDF

33.0 KB Created: 2021-07-20 02:26:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 34afa13fd2a537d8c5b3a9b989c2a0b2 SHA-1: b13d72164c8597fa3eda252dbd11395cd4d5625d SHA-256: 65f61b2bc3585424ed4732a1a368a43d2db18ffbddee1ce43fe3af6f9945f883
160 Risk Score

Malware Insights

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

This PDF document employs a lure related to free game generators and hacks to entice users to click embedded links. The primary link, http://netcdn.tw/app/479516143/how-to-get-minecraft-for-free-on-ps4-game-hack, is known to lead to malicious redirector infrastructure. The document's content and embedded links suggest an attempt to exploit user interest in free in-game items to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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.tw/app/479516143/how-to-get-minecraft-for-free-on-ps4-game-hack In PDF document text
    • http://neumann.fr/images/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://neumann.fr/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://neumann.fr/images/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • http://neumann.fr/images/free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://neumann.fr/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://neumann.fr/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://neumann.fr/images/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://neumann.fr/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://neumann.fr/images/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://neumann.fr/images/ways-to-get-free-robux_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_off00002e46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E46 22248 bytes
SHA-256: 67deae88239d7ceb3e5a81d23104bfdda7dd64ad48ae2e661c19125f032ee3ab
font_01_sfnt_off00005f99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F99 18088 bytes
SHA-256: 3c584cfdb2e84eddbd4369948c7cb3512903decb89ab4dae7c156f2377516814

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