Malicious PDF — malware analysis report

Static analysis result for SHA-256 885b94917baf07c3…

MALICIOUS

PDF

33.8 KB Created: 2021-07-05 16:57:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 18063401c06229b1803a23ee06c39423 SHA-1: a9eb8666f93cd22771d701102c802854aba00bde SHA-256: 885b94917baf07c3f060e6e532027ea2f09cdf5f80d16bac924b534bb1bc4f1f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and free items, directing users to a known malicious redirector. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or malware distribution attempt.

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.tw/app/479516143/minecraft-that-you-can-play-for-free-game-hack In PDF document text
    • http://opac.acehresearch.org/repository/coin-master-free-spins-link-deutsch-ios_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/free-level-7-executor-roblox_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/robux-sites_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/free-head-spam-glitch-at-roblox-high-school-legacy_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/free-unlimited-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/get-free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/free-spins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/robux-generator-without-human-verification-2021_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_off00003029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3029 21876 bytes
SHA-256: 02b27ba13600899bf2f9f7cc1c1e32a9a9009b364bcde65571f8a5d90add39e2
font_01_sfnt_off00005fc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC0 18872 bytes
SHA-256: c14a64e1cd9767792e23c361a5442cbd2271d12f8fb26f1f3810dea2f6830d61

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